1 /* 2 * ipr.c -- driver for IBM Power Linux RAID adapters 3 * 4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) 2003, 2004 IBM Corporation 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 /* 25 * Notes: 26 * 27 * This driver is used to control the following SCSI adapters: 28 * 29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B 30 * 31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter 32 * PCI-X Dual Channel Ultra 320 SCSI Adapter 33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card 34 * Embedded SCSI adapter on p615 and p655 systems 35 * 36 * Supported Hardware Features: 37 * - Ultra 320 SCSI controller 38 * - PCI-X host interface 39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine 40 * - Non-Volatile Write Cache 41 * - Supports attachment of non-RAID disks, tape, and optical devices 42 * - RAID Levels 0, 5, 10 43 * - Hot spare 44 * - Background Parity Checking 45 * - Background Data Scrubbing 46 * - Ability to increase the capacity of an existing RAID 5 disk array 47 * by adding disks 48 * 49 * Driver Features: 50 * - Tagged command queuing 51 * - Adapter microcode download 52 * - PCI hot plug 53 * - SCSI device hot plug 54 * 55 */ 56 57 #include <linux/fs.h> 58 #include <linux/init.h> 59 #include <linux/types.h> 60 #include <linux/errno.h> 61 #include <linux/kernel.h> 62 #include <linux/ioport.h> 63 #include <linux/delay.h> 64 #include <linux/pci.h> 65 #include <linux/wait.h> 66 #include <linux/spinlock.h> 67 #include <linux/sched.h> 68 #include <linux/interrupt.h> 69 #include <linux/blkdev.h> 70 #include <linux/firmware.h> 71 #include <linux/module.h> 72 #include <linux/moduleparam.h> 73 #include <linux/libata.h> 74 #include <asm/io.h> 75 #include <asm/irq.h> 76 #include <asm/processor.h> 77 #include <scsi/scsi.h> 78 #include <scsi/scsi_host.h> 79 #include <scsi/scsi_tcq.h> 80 #include <scsi/scsi_eh.h> 81 #include <scsi/scsi_cmnd.h> 82 #include "ipr.h" 83 84 /* 85 * Global Data 86 */ 87 static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head); 88 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL; 89 static unsigned int ipr_max_speed = 1; 90 static int ipr_testmode = 0; 91 static unsigned int ipr_fastfail = 0; 92 static unsigned int ipr_transop_timeout = 0; 93 static unsigned int ipr_enable_cache = 1; 94 static unsigned int ipr_debug = 0; 95 static DEFINE_SPINLOCK(ipr_driver_lock); 96 97 /* This table describes the differences between DMA controller chips */ 98 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = { 99 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */ 100 .mailbox = 0x0042C, 101 .cache_line_size = 0x20, 102 { 103 .set_interrupt_mask_reg = 0x0022C, 104 .clr_interrupt_mask_reg = 0x00230, 105 .sense_interrupt_mask_reg = 0x0022C, 106 .clr_interrupt_reg = 0x00228, 107 .sense_interrupt_reg = 0x00224, 108 .ioarrin_reg = 0x00404, 109 .sense_uproc_interrupt_reg = 0x00214, 110 .set_uproc_interrupt_reg = 0x00214, 111 .clr_uproc_interrupt_reg = 0x00218 112 } 113 }, 114 { /* Snipe and Scamp */ 115 .mailbox = 0x0052C, 116 .cache_line_size = 0x20, 117 { 118 .set_interrupt_mask_reg = 0x00288, 119 .clr_interrupt_mask_reg = 0x0028C, 120 .sense_interrupt_mask_reg = 0x00288, 121 .clr_interrupt_reg = 0x00284, 122 .sense_interrupt_reg = 0x00280, 123 .ioarrin_reg = 0x00504, 124 .sense_uproc_interrupt_reg = 0x00290, 125 .set_uproc_interrupt_reg = 0x00290, 126 .clr_uproc_interrupt_reg = 0x00294 127 } 128 }, 129 }; 130 131 static const struct ipr_chip_t ipr_chip[] = { 132 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] }, 133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] }, 134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] }, 135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] }, 136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] }, 137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] }, 138 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] } 139 }; 140 141 static int ipr_max_bus_speeds [] = { 142 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE 143 }; 144 145 MODULE_AUTHOR("Brian King <brking@us.ibm.com>"); 146 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver"); 147 module_param_named(max_speed, ipr_max_speed, uint, 0); 148 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320"); 149 module_param_named(log_level, ipr_log_level, uint, 0); 150 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver"); 151 module_param_named(testmode, ipr_testmode, int, 0); 152 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations"); 153 module_param_named(fastfail, ipr_fastfail, int, 0); 154 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries"); 155 module_param_named(transop_timeout, ipr_transop_timeout, int, 0); 156 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)"); 157 module_param_named(enable_cache, ipr_enable_cache, int, 0); 158 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)"); 159 module_param_named(debug, ipr_debug, int, 0); 160 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)"); 161 MODULE_LICENSE("GPL"); 162 MODULE_VERSION(IPR_DRIVER_VERSION); 163 164 /* A constant array of IOASCs/URCs/Error Messages */ 165 static const 166 struct ipr_error_table_t ipr_error_table[] = { 167 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL, 168 "8155: An unknown error was received"}, 169 {0x00330000, 0, 0, 170 "Soft underlength error"}, 171 {0x005A0000, 0, 0, 172 "Command to be cancelled not found"}, 173 {0x00808000, 0, 0, 174 "Qualified success"}, 175 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL, 176 "FFFE: Soft device bus error recovered by the IOA"}, 177 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL, 178 "4101: Soft device bus fabric error"}, 179 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL, 180 "FFF9: Device sector reassign successful"}, 181 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL, 182 "FFF7: Media error recovered by device rewrite procedures"}, 183 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL, 184 "7001: IOA sector reassignment successful"}, 185 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL, 186 "FFF9: Soft media error. Sector reassignment recommended"}, 187 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL, 188 "FFF7: Media error recovered by IOA rewrite procedures"}, 189 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL, 190 "FF3D: Soft PCI bus error recovered by the IOA"}, 191 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL, 192 "FFF6: Device hardware error recovered by the IOA"}, 193 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL, 194 "FFF6: Device hardware error recovered by the device"}, 195 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL, 196 "FF3D: Soft IOA error recovered by the IOA"}, 197 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL, 198 "FFFA: Undefined device response recovered by the IOA"}, 199 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL, 200 "FFF6: Device bus error, message or command phase"}, 201 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL, 202 "FFFE: Task Management Function failed"}, 203 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL, 204 "FFF6: Failure prediction threshold exceeded"}, 205 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL, 206 "8009: Impending cache battery pack failure"}, 207 {0x02040400, 0, 0, 208 "34FF: Disk device format in progress"}, 209 {0x023F0000, 0, 0, 210 "Synchronization required"}, 211 {0x024E0000, 0, 0, 212 "No ready, IOA shutdown"}, 213 {0x025A0000, 0, 0, 214 "Not ready, IOA has been shutdown"}, 215 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL, 216 "3020: Storage subsystem configuration error"}, 217 {0x03110B00, 0, 0, 218 "FFF5: Medium error, data unreadable, recommend reassign"}, 219 {0x03110C00, 0, 0, 220 "7000: Medium error, data unreadable, do not reassign"}, 221 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL, 222 "FFF3: Disk media format bad"}, 223 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL, 224 "3002: Addressed device failed to respond to selection"}, 225 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL, 226 "3100: Device bus error"}, 227 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL, 228 "3109: IOA timed out a device command"}, 229 {0x04088000, 0, 0, 230 "3120: SCSI bus is not operational"}, 231 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL, 232 "4100: Hard device bus fabric error"}, 233 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL, 234 "9000: IOA reserved area data check"}, 235 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL, 236 "9001: IOA reserved area invalid data pattern"}, 237 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL, 238 "9002: IOA reserved area LRC error"}, 239 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL, 240 "102E: Out of alternate sectors for disk storage"}, 241 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL, 242 "FFF4: Data transfer underlength error"}, 243 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL, 244 "FFF4: Data transfer overlength error"}, 245 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL, 246 "3400: Logical unit failure"}, 247 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL, 248 "FFF4: Device microcode is corrupt"}, 249 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL, 250 "8150: PCI bus error"}, 251 {0x04430000, 1, 0, 252 "Unsupported device bus message received"}, 253 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL, 254 "FFF4: Disk device problem"}, 255 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL, 256 "8150: Permanent IOA failure"}, 257 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL, 258 "3010: Disk device returned wrong response to IOA"}, 259 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL, 260 "8151: IOA microcode error"}, 261 {0x04448500, 0, 0, 262 "Device bus status error"}, 263 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL, 264 "8157: IOA error requiring IOA reset to recover"}, 265 {0x04448700, 0, 0, 266 "ATA device status error"}, 267 {0x04490000, 0, 0, 268 "Message reject received from the device"}, 269 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL, 270 "8008: A permanent cache battery pack failure occurred"}, 271 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL, 272 "9090: Disk unit has been modified after the last known status"}, 273 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL, 274 "9081: IOA detected device error"}, 275 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL, 276 "9082: IOA detected device error"}, 277 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL, 278 "3110: Device bus error, message or command phase"}, 279 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL, 280 "3110: SAS Command / Task Management Function failed"}, 281 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL, 282 "9091: Incorrect hardware configuration change has been detected"}, 283 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL, 284 "9073: Invalid multi-adapter configuration"}, 285 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL, 286 "4010: Incorrect connection between cascaded expanders"}, 287 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL, 288 "4020: Connections exceed IOA design limits"}, 289 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL, 290 "4030: Incorrect multipath connection"}, 291 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL, 292 "4110: Unsupported enclosure function"}, 293 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL, 294 "FFF4: Command to logical unit failed"}, 295 {0x05240000, 1, 0, 296 "Illegal request, invalid request type or request packet"}, 297 {0x05250000, 0, 0, 298 "Illegal request, invalid resource handle"}, 299 {0x05258000, 0, 0, 300 "Illegal request, commands not allowed to this device"}, 301 {0x05258100, 0, 0, 302 "Illegal request, command not allowed to a secondary adapter"}, 303 {0x05260000, 0, 0, 304 "Illegal request, invalid field in parameter list"}, 305 {0x05260100, 0, 0, 306 "Illegal request, parameter not supported"}, 307 {0x05260200, 0, 0, 308 "Illegal request, parameter value invalid"}, 309 {0x052C0000, 0, 0, 310 "Illegal request, command sequence error"}, 311 {0x052C8000, 1, 0, 312 "Illegal request, dual adapter support not enabled"}, 313 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL, 314 "9031: Array protection temporarily suspended, protection resuming"}, 315 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL, 316 "9040: Array protection temporarily suspended, protection resuming"}, 317 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL, 318 "3140: Device bus not ready to ready transition"}, 319 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL, 320 "FFFB: SCSI bus was reset"}, 321 {0x06290500, 0, 0, 322 "FFFE: SCSI bus transition to single ended"}, 323 {0x06290600, 0, 0, 324 "FFFE: SCSI bus transition to LVD"}, 325 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL, 326 "FFFB: SCSI bus was reset by another initiator"}, 327 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL, 328 "3029: A device replacement has occurred"}, 329 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL, 330 "9051: IOA cache data exists for a missing or failed device"}, 331 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL, 332 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"}, 333 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL, 334 "9025: Disk unit is not supported at its physical location"}, 335 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL, 336 "3020: IOA detected a SCSI bus configuration error"}, 337 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL, 338 "3150: SCSI bus configuration error"}, 339 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL, 340 "9074: Asymmetric advanced function disk configuration"}, 341 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL, 342 "4040: Incomplete multipath connection between IOA and enclosure"}, 343 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL, 344 "4041: Incomplete multipath connection between enclosure and device"}, 345 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL, 346 "9075: Incomplete multipath connection between IOA and remote IOA"}, 347 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL, 348 "9076: Configuration error, missing remote IOA"}, 349 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL, 350 "4050: Enclosure does not support a required multipath function"}, 351 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL, 352 "9041: Array protection temporarily suspended"}, 353 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL, 354 "9042: Corrupt array parity detected on specified device"}, 355 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL, 356 "9030: Array no longer protected due to missing or failed disk unit"}, 357 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL, 358 "9071: Link operational transition"}, 359 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL, 360 "9072: Link not operational transition"}, 361 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL, 362 "9032: Array exposed but still protected"}, 363 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1, 364 "70DD: Device forced failed by disrupt device command"}, 365 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL, 366 "4061: Multipath redundancy level got better"}, 367 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL, 368 "4060: Multipath redundancy level got worse"}, 369 {0x07270000, 0, 0, 370 "Failure due to other device"}, 371 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL, 372 "9008: IOA does not support functions expected by devices"}, 373 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL, 374 "9010: Cache data associated with attached devices cannot be found"}, 375 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL, 376 "9011: Cache data belongs to devices other than those attached"}, 377 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL, 378 "9020: Array missing 2 or more devices with only 1 device present"}, 379 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL, 380 "9021: Array missing 2 or more devices with 2 or more devices present"}, 381 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL, 382 "9022: Exposed array is missing a required device"}, 383 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL, 384 "9023: Array member(s) not at required physical locations"}, 385 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL, 386 "9024: Array not functional due to present hardware configuration"}, 387 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL, 388 "9026: Array not functional due to present hardware configuration"}, 389 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL, 390 "9027: Array is missing a device and parity is out of sync"}, 391 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL, 392 "9028: Maximum number of arrays already exist"}, 393 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL, 394 "9050: Required cache data cannot be located for a disk unit"}, 395 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL, 396 "9052: Cache data exists for a device that has been modified"}, 397 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL, 398 "9054: IOA resources not available due to previous problems"}, 399 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL, 400 "9092: Disk unit requires initialization before use"}, 401 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL, 402 "9029: Incorrect hardware configuration change has been detected"}, 403 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL, 404 "9060: One or more disk pairs are missing from an array"}, 405 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL, 406 "9061: One or more disks are missing from an array"}, 407 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL, 408 "9062: One or more disks are missing from an array"}, 409 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL, 410 "9063: Maximum number of functional arrays has been exceeded"}, 411 {0x0B260000, 0, 0, 412 "Aborted command, invalid descriptor"}, 413 {0x0B5A0000, 0, 0, 414 "Command terminated by host"} 415 }; 416 417 static const struct ipr_ses_table_entry ipr_ses_table[] = { 418 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 }, 419 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 }, 420 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */ 421 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */ 422 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */ 423 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */ 424 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 }, 425 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 }, 426 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 427 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 }, 428 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 }, 429 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 }, 430 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 } 431 }; 432 433 /* 434 * Function Prototypes 435 */ 436 static int ipr_reset_alert(struct ipr_cmnd *); 437 static void ipr_process_ccn(struct ipr_cmnd *); 438 static void ipr_process_error(struct ipr_cmnd *); 439 static void ipr_reset_ioa_job(struct ipr_cmnd *); 440 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *, 441 enum ipr_shutdown_type); 442 443 #ifdef CONFIG_SCSI_IPR_TRACE 444 /** 445 * ipr_trc_hook - Add a trace entry to the driver trace 446 * @ipr_cmd: ipr command struct 447 * @type: trace type 448 * @add_data: additional data 449 * 450 * Return value: 451 * none 452 **/ 453 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, 454 u8 type, u32 add_data) 455 { 456 struct ipr_trace_entry *trace_entry; 457 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 458 459 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++]; 460 trace_entry->time = jiffies; 461 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; 462 trace_entry->type = type; 463 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command; 464 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; 465 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; 466 trace_entry->u.add_data = add_data; 467 } 468 #else 469 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0) 470 #endif 471 472 /** 473 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse 474 * @ipr_cmd: ipr command struct 475 * 476 * Return value: 477 * none 478 **/ 479 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 480 { 481 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 482 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 483 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr); 484 485 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 486 ioarcb->write_data_transfer_length = 0; 487 ioarcb->read_data_transfer_length = 0; 488 ioarcb->write_ioadl_len = 0; 489 ioarcb->read_ioadl_len = 0; 490 ioarcb->write_ioadl_addr = 491 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 492 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 493 ioasa->ioasc = 0; 494 ioasa->residual_data_len = 0; 495 ioasa->u.gata.status = 0; 496 497 ipr_cmd->scsi_cmd = NULL; 498 ipr_cmd->qc = NULL; 499 ipr_cmd->sense_buffer[0] = 0; 500 ipr_cmd->dma_use_sg = 0; 501 } 502 503 /** 504 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block 505 * @ipr_cmd: ipr command struct 506 * 507 * Return value: 508 * none 509 **/ 510 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd) 511 { 512 ipr_reinit_ipr_cmnd(ipr_cmd); 513 ipr_cmd->u.scratch = 0; 514 ipr_cmd->sibling = NULL; 515 init_timer(&ipr_cmd->timer); 516 } 517 518 /** 519 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block 520 * @ioa_cfg: ioa config struct 521 * 522 * Return value: 523 * pointer to ipr command struct 524 **/ 525 static 526 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg) 527 { 528 struct ipr_cmnd *ipr_cmd; 529 530 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue); 531 list_del(&ipr_cmd->queue); 532 ipr_init_ipr_cmnd(ipr_cmd); 533 534 return ipr_cmd; 535 } 536 537 /** 538 * ipr_unmap_sglist - Unmap scatterlist if mapped 539 * @ioa_cfg: ioa config struct 540 * @ipr_cmd: ipr command struct 541 * 542 * Return value: 543 * nothing 544 **/ 545 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg, 546 struct ipr_cmnd *ipr_cmd) 547 { 548 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 549 550 if (ipr_cmd->dma_use_sg) { 551 if (scsi_cmd->use_sg > 0) { 552 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer, 553 scsi_cmd->use_sg, 554 scsi_cmd->sc_data_direction); 555 } else { 556 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle, 557 scsi_cmd->request_bufflen, 558 scsi_cmd->sc_data_direction); 559 } 560 } 561 } 562 563 /** 564 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts 565 * @ioa_cfg: ioa config struct 566 * @clr_ints: interrupts to clear 567 * 568 * This function masks all interrupts on the adapter, then clears the 569 * interrupts specified in the mask 570 * 571 * Return value: 572 * none 573 **/ 574 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg, 575 u32 clr_ints) 576 { 577 volatile u32 int_reg; 578 579 /* Stop new interrupts */ 580 ioa_cfg->allow_interrupts = 0; 581 582 /* Set interrupt mask to stop all new interrupts */ 583 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg); 584 585 /* Clear any pending interrupts */ 586 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg); 587 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 588 } 589 590 /** 591 * ipr_save_pcix_cmd_reg - Save PCI-X command register 592 * @ioa_cfg: ioa config struct 593 * 594 * Return value: 595 * 0 on success / -EIO on failure 596 **/ 597 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 598 { 599 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 600 601 if (pcix_cmd_reg == 0) 602 return 0; 603 604 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 605 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 606 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n"); 607 return -EIO; 608 } 609 610 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO; 611 return 0; 612 } 613 614 /** 615 * ipr_set_pcix_cmd_reg - Setup PCI-X command register 616 * @ioa_cfg: ioa config struct 617 * 618 * Return value: 619 * 0 on success / -EIO on failure 620 **/ 621 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) 622 { 623 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX); 624 625 if (pcix_cmd_reg) { 626 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD, 627 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) { 628 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n"); 629 return -EIO; 630 } 631 } 632 633 return 0; 634 } 635 636 /** 637 * ipr_sata_eh_done - done function for aborted SATA commands 638 * @ipr_cmd: ipr command struct 639 * 640 * This function is invoked for ops generated to SATA 641 * devices which are being aborted. 642 * 643 * Return value: 644 * none 645 **/ 646 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) 647 { 648 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 649 struct ata_queued_cmd *qc = ipr_cmd->qc; 650 struct ipr_sata_port *sata_port = qc->ap->private_data; 651 652 qc->err_mask |= AC_ERR_OTHER; 653 sata_port->ioasa.status |= ATA_BUSY; 654 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 655 ata_qc_complete(qc); 656 } 657 658 /** 659 * ipr_scsi_eh_done - mid-layer done function for aborted ops 660 * @ipr_cmd: ipr command struct 661 * 662 * This function is invoked by the interrupt handler for 663 * ops generated by the SCSI mid-layer which are being aborted. 664 * 665 * Return value: 666 * none 667 **/ 668 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) 669 { 670 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 671 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 672 673 scsi_cmd->result |= (DID_ERROR << 16); 674 675 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 676 scsi_cmd->scsi_done(scsi_cmd); 677 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 678 } 679 680 /** 681 * ipr_fail_all_ops - Fails all outstanding ops. 682 * @ioa_cfg: ioa config struct 683 * 684 * This function fails all outstanding ops. 685 * 686 * Return value: 687 * none 688 **/ 689 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) 690 { 691 struct ipr_cmnd *ipr_cmd, *temp; 692 693 ENTER; 694 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) { 695 list_del(&ipr_cmd->queue); 696 697 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET); 698 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID); 699 700 if (ipr_cmd->scsi_cmd) 701 ipr_cmd->done = ipr_scsi_eh_done; 702 else if (ipr_cmd->qc) 703 ipr_cmd->done = ipr_sata_eh_done; 704 705 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); 706 del_timer(&ipr_cmd->timer); 707 ipr_cmd->done(ipr_cmd); 708 } 709 710 LEAVE; 711 } 712 713 /** 714 * ipr_do_req - Send driver initiated requests. 715 * @ipr_cmd: ipr command struct 716 * @done: done function 717 * @timeout_func: timeout function 718 * @timeout: timeout value 719 * 720 * This function sends the specified command to the adapter with the 721 * timeout given. The done function is invoked on command completion. 722 * 723 * Return value: 724 * none 725 **/ 726 static void ipr_do_req(struct ipr_cmnd *ipr_cmd, 727 void (*done) (struct ipr_cmnd *), 728 void (*timeout_func) (struct ipr_cmnd *), u32 timeout) 729 { 730 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 731 732 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 733 734 ipr_cmd->done = done; 735 736 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 737 ipr_cmd->timer.expires = jiffies + timeout; 738 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func; 739 740 add_timer(&ipr_cmd->timer); 741 742 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0); 743 744 mb(); 745 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 746 ioa_cfg->regs.ioarrin_reg); 747 } 748 749 /** 750 * ipr_internal_cmd_done - Op done function for an internally generated op. 751 * @ipr_cmd: ipr command struct 752 * 753 * This function is the op done function for an internally generated, 754 * blocking op. It simply wakes the sleeping thread. 755 * 756 * Return value: 757 * none 758 **/ 759 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd) 760 { 761 if (ipr_cmd->sibling) 762 ipr_cmd->sibling = NULL; 763 else 764 complete(&ipr_cmd->completion); 765 } 766 767 /** 768 * ipr_send_blocking_cmd - Send command and sleep on its completion. 769 * @ipr_cmd: ipr command struct 770 * @timeout_func: function to invoke if command times out 771 * @timeout: timeout 772 * 773 * Return value: 774 * none 775 **/ 776 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd, 777 void (*timeout_func) (struct ipr_cmnd *ipr_cmd), 778 u32 timeout) 779 { 780 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 781 782 init_completion(&ipr_cmd->completion); 783 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout); 784 785 spin_unlock_irq(ioa_cfg->host->host_lock); 786 wait_for_completion(&ipr_cmd->completion); 787 spin_lock_irq(ioa_cfg->host->host_lock); 788 } 789 790 /** 791 * ipr_send_hcam - Send an HCAM to the adapter. 792 * @ioa_cfg: ioa config struct 793 * @type: HCAM type 794 * @hostrcb: hostrcb struct 795 * 796 * This function will send a Host Controlled Async command to the adapter. 797 * If HCAMs are currently not allowed to be issued to the adapter, it will 798 * place the hostrcb on the free queue. 799 * 800 * Return value: 801 * none 802 **/ 803 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type, 804 struct ipr_hostrcb *hostrcb) 805 { 806 struct ipr_cmnd *ipr_cmd; 807 struct ipr_ioarcb *ioarcb; 808 809 if (ioa_cfg->allow_cmds) { 810 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 811 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 812 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q); 813 814 ipr_cmd->u.hostrcb = hostrcb; 815 ioarcb = &ipr_cmd->ioarcb; 816 817 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 818 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM; 819 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC; 820 ioarcb->cmd_pkt.cdb[1] = type; 821 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff; 822 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff; 823 824 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam)); 825 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 826 ipr_cmd->ioadl[0].flags_and_data_len = 827 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam)); 828 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma); 829 830 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE) 831 ipr_cmd->done = ipr_process_ccn; 832 else 833 ipr_cmd->done = ipr_process_error; 834 835 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR); 836 837 mb(); 838 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 839 ioa_cfg->regs.ioarrin_reg); 840 } else { 841 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 842 } 843 } 844 845 /** 846 * ipr_init_res_entry - Initialize a resource entry struct. 847 * @res: resource entry struct 848 * 849 * Return value: 850 * none 851 **/ 852 static void ipr_init_res_entry(struct ipr_resource_entry *res) 853 { 854 res->needs_sync_complete = 0; 855 res->in_erp = 0; 856 res->add_to_ml = 0; 857 res->del_from_ml = 0; 858 res->resetting_device = 0; 859 res->sdev = NULL; 860 res->sata_port = NULL; 861 } 862 863 /** 864 * ipr_handle_config_change - Handle a config change from the adapter 865 * @ioa_cfg: ioa config struct 866 * @hostrcb: hostrcb 867 * 868 * Return value: 869 * none 870 **/ 871 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg, 872 struct ipr_hostrcb *hostrcb) 873 { 874 struct ipr_resource_entry *res = NULL; 875 struct ipr_config_table_entry *cfgte; 876 u32 is_ndn = 1; 877 878 cfgte = &hostrcb->hcam.u.ccn.cfgte; 879 880 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 881 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr, 882 sizeof(cfgte->res_addr))) { 883 is_ndn = 0; 884 break; 885 } 886 } 887 888 if (is_ndn) { 889 if (list_empty(&ioa_cfg->free_res_q)) { 890 ipr_send_hcam(ioa_cfg, 891 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, 892 hostrcb); 893 return; 894 } 895 896 res = list_entry(ioa_cfg->free_res_q.next, 897 struct ipr_resource_entry, queue); 898 899 list_del(&res->queue); 900 ipr_init_res_entry(res); 901 list_add_tail(&res->queue, &ioa_cfg->used_res_q); 902 } 903 904 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 905 906 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) { 907 if (res->sdev) { 908 res->del_from_ml = 1; 909 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 910 if (ioa_cfg->allow_ml_add_del) 911 schedule_work(&ioa_cfg->work_q); 912 } else 913 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 914 } else if (!res->sdev) { 915 res->add_to_ml = 1; 916 if (ioa_cfg->allow_ml_add_del) 917 schedule_work(&ioa_cfg->work_q); 918 } 919 920 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 921 } 922 923 /** 924 * ipr_process_ccn - Op done function for a CCN. 925 * @ipr_cmd: ipr command struct 926 * 927 * This function is the op done function for a configuration 928 * change notification host controlled async from the adapter. 929 * 930 * Return value: 931 * none 932 **/ 933 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd) 934 { 935 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 936 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 937 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 938 939 list_del(&hostrcb->queue); 940 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 941 942 if (ioasc) { 943 if (ioasc != IPR_IOASC_IOA_WAS_RESET) 944 dev_err(&ioa_cfg->pdev->dev, 945 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 946 947 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 948 } else { 949 ipr_handle_config_change(ioa_cfg, hostrcb); 950 } 951 } 952 953 /** 954 * ipr_log_vpd - Log the passed VPD to the error log. 955 * @vpd: vendor/product id/sn struct 956 * 957 * Return value: 958 * none 959 **/ 960 static void ipr_log_vpd(struct ipr_vpd *vpd) 961 { 962 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN 963 + IPR_SERIAL_NUM_LEN]; 964 965 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN); 966 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id, 967 IPR_PROD_ID_LEN); 968 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0'; 969 ipr_err("Vendor/Product ID: %s\n", buffer); 970 971 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN); 972 buffer[IPR_SERIAL_NUM_LEN] = '\0'; 973 ipr_err(" Serial Number: %s\n", buffer); 974 } 975 976 /** 977 * ipr_log_ext_vpd - Log the passed extended VPD to the error log. 978 * @vpd: vendor/product id/sn/wwn struct 979 * 980 * Return value: 981 * none 982 **/ 983 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd) 984 { 985 ipr_log_vpd(&vpd->vpd); 986 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]), 987 be32_to_cpu(vpd->wwid[1])); 988 } 989 990 /** 991 * ipr_log_enhanced_cache_error - Log a cache error. 992 * @ioa_cfg: ioa config struct 993 * @hostrcb: hostrcb struct 994 * 995 * Return value: 996 * none 997 **/ 998 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg, 999 struct ipr_hostrcb *hostrcb) 1000 { 1001 struct ipr_hostrcb_type_12_error *error = 1002 &hostrcb->hcam.u.error.u.type_12_error; 1003 1004 ipr_err("-----Current Configuration-----\n"); 1005 ipr_err("Cache Directory Card Information:\n"); 1006 ipr_log_ext_vpd(&error->ioa_vpd); 1007 ipr_err("Adapter Card Information:\n"); 1008 ipr_log_ext_vpd(&error->cfc_vpd); 1009 1010 ipr_err("-----Expected Configuration-----\n"); 1011 ipr_err("Cache Directory Card Information:\n"); 1012 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd); 1013 ipr_err("Adapter Card Information:\n"); 1014 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd); 1015 1016 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1017 be32_to_cpu(error->ioa_data[0]), 1018 be32_to_cpu(error->ioa_data[1]), 1019 be32_to_cpu(error->ioa_data[2])); 1020 } 1021 1022 /** 1023 * ipr_log_cache_error - Log a cache error. 1024 * @ioa_cfg: ioa config struct 1025 * @hostrcb: hostrcb struct 1026 * 1027 * Return value: 1028 * none 1029 **/ 1030 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg, 1031 struct ipr_hostrcb *hostrcb) 1032 { 1033 struct ipr_hostrcb_type_02_error *error = 1034 &hostrcb->hcam.u.error.u.type_02_error; 1035 1036 ipr_err("-----Current Configuration-----\n"); 1037 ipr_err("Cache Directory Card Information:\n"); 1038 ipr_log_vpd(&error->ioa_vpd); 1039 ipr_err("Adapter Card Information:\n"); 1040 ipr_log_vpd(&error->cfc_vpd); 1041 1042 ipr_err("-----Expected Configuration-----\n"); 1043 ipr_err("Cache Directory Card Information:\n"); 1044 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd); 1045 ipr_err("Adapter Card Information:\n"); 1046 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd); 1047 1048 ipr_err("Additional IOA Data: %08X %08X %08X\n", 1049 be32_to_cpu(error->ioa_data[0]), 1050 be32_to_cpu(error->ioa_data[1]), 1051 be32_to_cpu(error->ioa_data[2])); 1052 } 1053 1054 /** 1055 * ipr_log_enhanced_config_error - Log a configuration error. 1056 * @ioa_cfg: ioa config struct 1057 * @hostrcb: hostrcb struct 1058 * 1059 * Return value: 1060 * none 1061 **/ 1062 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg, 1063 struct ipr_hostrcb *hostrcb) 1064 { 1065 int errors_logged, i; 1066 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry; 1067 struct ipr_hostrcb_type_13_error *error; 1068 1069 error = &hostrcb->hcam.u.error.u.type_13_error; 1070 errors_logged = be32_to_cpu(error->errors_logged); 1071 1072 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1073 be32_to_cpu(error->errors_detected), errors_logged); 1074 1075 dev_entry = error->dev; 1076 1077 for (i = 0; i < errors_logged; i++, dev_entry++) { 1078 ipr_err_separator; 1079 1080 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1081 ipr_log_ext_vpd(&dev_entry->vpd); 1082 1083 ipr_err("-----New Device Information-----\n"); 1084 ipr_log_ext_vpd(&dev_entry->new_vpd); 1085 1086 ipr_err("Cache Directory Card Information:\n"); 1087 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd); 1088 1089 ipr_err("Adapter Card Information:\n"); 1090 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd); 1091 } 1092 } 1093 1094 /** 1095 * ipr_log_config_error - Log a configuration error. 1096 * @ioa_cfg: ioa config struct 1097 * @hostrcb: hostrcb struct 1098 * 1099 * Return value: 1100 * none 1101 **/ 1102 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg, 1103 struct ipr_hostrcb *hostrcb) 1104 { 1105 int errors_logged, i; 1106 struct ipr_hostrcb_device_data_entry *dev_entry; 1107 struct ipr_hostrcb_type_03_error *error; 1108 1109 error = &hostrcb->hcam.u.error.u.type_03_error; 1110 errors_logged = be32_to_cpu(error->errors_logged); 1111 1112 ipr_err("Device Errors Detected/Logged: %d/%d\n", 1113 be32_to_cpu(error->errors_detected), errors_logged); 1114 1115 dev_entry = error->dev; 1116 1117 for (i = 0; i < errors_logged; i++, dev_entry++) { 1118 ipr_err_separator; 1119 1120 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1); 1121 ipr_log_vpd(&dev_entry->vpd); 1122 1123 ipr_err("-----New Device Information-----\n"); 1124 ipr_log_vpd(&dev_entry->new_vpd); 1125 1126 ipr_err("Cache Directory Card Information:\n"); 1127 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd); 1128 1129 ipr_err("Adapter Card Information:\n"); 1130 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd); 1131 1132 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n", 1133 be32_to_cpu(dev_entry->ioa_data[0]), 1134 be32_to_cpu(dev_entry->ioa_data[1]), 1135 be32_to_cpu(dev_entry->ioa_data[2]), 1136 be32_to_cpu(dev_entry->ioa_data[3]), 1137 be32_to_cpu(dev_entry->ioa_data[4])); 1138 } 1139 } 1140 1141 /** 1142 * ipr_log_enhanced_array_error - Log an array configuration error. 1143 * @ioa_cfg: ioa config struct 1144 * @hostrcb: hostrcb struct 1145 * 1146 * Return value: 1147 * none 1148 **/ 1149 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg, 1150 struct ipr_hostrcb *hostrcb) 1151 { 1152 int i, num_entries; 1153 struct ipr_hostrcb_type_14_error *error; 1154 struct ipr_hostrcb_array_data_entry_enhanced *array_entry; 1155 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1156 1157 error = &hostrcb->hcam.u.error.u.type_14_error; 1158 1159 ipr_err_separator; 1160 1161 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1162 error->protection_level, 1163 ioa_cfg->host->host_no, 1164 error->last_func_vset_res_addr.bus, 1165 error->last_func_vset_res_addr.target, 1166 error->last_func_vset_res_addr.lun); 1167 1168 ipr_err_separator; 1169 1170 array_entry = error->array_member; 1171 num_entries = min_t(u32, be32_to_cpu(error->num_entries), 1172 sizeof(error->array_member)); 1173 1174 for (i = 0; i < num_entries; i++, array_entry++) { 1175 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1176 continue; 1177 1178 if (be32_to_cpu(error->exposed_mode_adn) == i) 1179 ipr_err("Exposed Array Member %d:\n", i); 1180 else 1181 ipr_err("Array Member %d:\n", i); 1182 1183 ipr_log_ext_vpd(&array_entry->vpd); 1184 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1185 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1186 "Expected Location"); 1187 1188 ipr_err_separator; 1189 } 1190 } 1191 1192 /** 1193 * ipr_log_array_error - Log an array configuration error. 1194 * @ioa_cfg: ioa config struct 1195 * @hostrcb: hostrcb struct 1196 * 1197 * Return value: 1198 * none 1199 **/ 1200 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg, 1201 struct ipr_hostrcb *hostrcb) 1202 { 1203 int i; 1204 struct ipr_hostrcb_type_04_error *error; 1205 struct ipr_hostrcb_array_data_entry *array_entry; 1206 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' }; 1207 1208 error = &hostrcb->hcam.u.error.u.type_04_error; 1209 1210 ipr_err_separator; 1211 1212 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n", 1213 error->protection_level, 1214 ioa_cfg->host->host_no, 1215 error->last_func_vset_res_addr.bus, 1216 error->last_func_vset_res_addr.target, 1217 error->last_func_vset_res_addr.lun); 1218 1219 ipr_err_separator; 1220 1221 array_entry = error->array_member; 1222 1223 for (i = 0; i < 18; i++) { 1224 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN)) 1225 continue; 1226 1227 if (be32_to_cpu(error->exposed_mode_adn) == i) 1228 ipr_err("Exposed Array Member %d:\n", i); 1229 else 1230 ipr_err("Array Member %d:\n", i); 1231 1232 ipr_log_vpd(&array_entry->vpd); 1233 1234 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location"); 1235 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr, 1236 "Expected Location"); 1237 1238 ipr_err_separator; 1239 1240 if (i == 9) 1241 array_entry = error->array_member2; 1242 else 1243 array_entry++; 1244 } 1245 } 1246 1247 /** 1248 * ipr_log_hex_data - Log additional hex IOA error data. 1249 * @ioa_cfg: ioa config struct 1250 * @data: IOA error data 1251 * @len: data length 1252 * 1253 * Return value: 1254 * none 1255 **/ 1256 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len) 1257 { 1258 int i; 1259 1260 if (len == 0) 1261 return; 1262 1263 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL) 1264 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP); 1265 1266 for (i = 0; i < len / 4; i += 4) { 1267 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 1268 be32_to_cpu(data[i]), 1269 be32_to_cpu(data[i+1]), 1270 be32_to_cpu(data[i+2]), 1271 be32_to_cpu(data[i+3])); 1272 } 1273 } 1274 1275 /** 1276 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error. 1277 * @ioa_cfg: ioa config struct 1278 * @hostrcb: hostrcb struct 1279 * 1280 * Return value: 1281 * none 1282 **/ 1283 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1284 struct ipr_hostrcb *hostrcb) 1285 { 1286 struct ipr_hostrcb_type_17_error *error; 1287 1288 error = &hostrcb->hcam.u.error.u.type_17_error; 1289 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1290 1291 ipr_err("%s\n", error->failure_reason); 1292 ipr_err("Remote Adapter VPD:\n"); 1293 ipr_log_ext_vpd(&error->vpd); 1294 ipr_log_hex_data(ioa_cfg, error->data, 1295 be32_to_cpu(hostrcb->hcam.length) - 1296 (offsetof(struct ipr_hostrcb_error, u) + 1297 offsetof(struct ipr_hostrcb_type_17_error, data))); 1298 } 1299 1300 /** 1301 * ipr_log_dual_ioa_error - Log a dual adapter error. 1302 * @ioa_cfg: ioa config struct 1303 * @hostrcb: hostrcb struct 1304 * 1305 * Return value: 1306 * none 1307 **/ 1308 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg, 1309 struct ipr_hostrcb *hostrcb) 1310 { 1311 struct ipr_hostrcb_type_07_error *error; 1312 1313 error = &hostrcb->hcam.u.error.u.type_07_error; 1314 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1315 1316 ipr_err("%s\n", error->failure_reason); 1317 ipr_err("Remote Adapter VPD:\n"); 1318 ipr_log_vpd(&error->vpd); 1319 ipr_log_hex_data(ioa_cfg, error->data, 1320 be32_to_cpu(hostrcb->hcam.length) - 1321 (offsetof(struct ipr_hostrcb_error, u) + 1322 offsetof(struct ipr_hostrcb_type_07_error, data))); 1323 } 1324 1325 static const struct { 1326 u8 active; 1327 char *desc; 1328 } path_active_desc[] = { 1329 { IPR_PATH_NO_INFO, "Path" }, 1330 { IPR_PATH_ACTIVE, "Active path" }, 1331 { IPR_PATH_NOT_ACTIVE, "Inactive path" } 1332 }; 1333 1334 static const struct { 1335 u8 state; 1336 char *desc; 1337 } path_state_desc[] = { 1338 { IPR_PATH_STATE_NO_INFO, "has no path state information available" }, 1339 { IPR_PATH_HEALTHY, "is healthy" }, 1340 { IPR_PATH_DEGRADED, "is degraded" }, 1341 { IPR_PATH_FAILED, "is failed" } 1342 }; 1343 1344 /** 1345 * ipr_log_fabric_path - Log a fabric path error 1346 * @hostrcb: hostrcb struct 1347 * @fabric: fabric descriptor 1348 * 1349 * Return value: 1350 * none 1351 **/ 1352 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb, 1353 struct ipr_hostrcb_fabric_desc *fabric) 1354 { 1355 int i, j; 1356 u8 path_state = fabric->path_state; 1357 u8 active = path_state & IPR_PATH_ACTIVE_MASK; 1358 u8 state = path_state & IPR_PATH_STATE_MASK; 1359 1360 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) { 1361 if (path_active_desc[i].active != active) 1362 continue; 1363 1364 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) { 1365 if (path_state_desc[j].state != state) 1366 continue; 1367 1368 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) { 1369 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n", 1370 path_active_desc[i].desc, path_state_desc[j].desc, 1371 fabric->ioa_port); 1372 } else if (fabric->cascaded_expander == 0xff) { 1373 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n", 1374 path_active_desc[i].desc, path_state_desc[j].desc, 1375 fabric->ioa_port, fabric->phy); 1376 } else if (fabric->phy == 0xff) { 1377 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n", 1378 path_active_desc[i].desc, path_state_desc[j].desc, 1379 fabric->ioa_port, fabric->cascaded_expander); 1380 } else { 1381 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n", 1382 path_active_desc[i].desc, path_state_desc[j].desc, 1383 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1384 } 1385 return; 1386 } 1387 } 1388 1389 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state, 1390 fabric->ioa_port, fabric->cascaded_expander, fabric->phy); 1391 } 1392 1393 static const struct { 1394 u8 type; 1395 char *desc; 1396 } path_type_desc[] = { 1397 { IPR_PATH_CFG_IOA_PORT, "IOA port" }, 1398 { IPR_PATH_CFG_EXP_PORT, "Expander port" }, 1399 { IPR_PATH_CFG_DEVICE_PORT, "Device port" }, 1400 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" } 1401 }; 1402 1403 static const struct { 1404 u8 status; 1405 char *desc; 1406 } path_status_desc[] = { 1407 { IPR_PATH_CFG_NO_PROB, "Functional" }, 1408 { IPR_PATH_CFG_DEGRADED, "Degraded" }, 1409 { IPR_PATH_CFG_FAILED, "Failed" }, 1410 { IPR_PATH_CFG_SUSPECT, "Suspect" }, 1411 { IPR_PATH_NOT_DETECTED, "Missing" }, 1412 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" } 1413 }; 1414 1415 static const char *link_rate[] = { 1416 "unknown", 1417 "disabled", 1418 "phy reset problem", 1419 "spinup hold", 1420 "port selector", 1421 "unknown", 1422 "unknown", 1423 "unknown", 1424 "1.5Gbps", 1425 "3.0Gbps", 1426 "unknown", 1427 "unknown", 1428 "unknown", 1429 "unknown", 1430 "unknown", 1431 "unknown" 1432 }; 1433 1434 /** 1435 * ipr_log_path_elem - Log a fabric path element. 1436 * @hostrcb: hostrcb struct 1437 * @cfg: fabric path element struct 1438 * 1439 * Return value: 1440 * none 1441 **/ 1442 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb, 1443 struct ipr_hostrcb_config_element *cfg) 1444 { 1445 int i, j; 1446 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK; 1447 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK; 1448 1449 if (type == IPR_PATH_CFG_NOT_EXIST) 1450 return; 1451 1452 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) { 1453 if (path_type_desc[i].type != type) 1454 continue; 1455 1456 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) { 1457 if (path_status_desc[j].status != status) 1458 continue; 1459 1460 if (type == IPR_PATH_CFG_IOA_PORT) { 1461 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n", 1462 path_status_desc[j].desc, path_type_desc[i].desc, 1463 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1464 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1465 } else { 1466 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) { 1467 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n", 1468 path_status_desc[j].desc, path_type_desc[i].desc, 1469 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1470 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1471 } else if (cfg->cascaded_expander == 0xff) { 1472 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, " 1473 "WWN=%08X%08X\n", path_status_desc[j].desc, 1474 path_type_desc[i].desc, cfg->phy, 1475 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1476 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1477 } else if (cfg->phy == 0xff) { 1478 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, " 1479 "WWN=%08X%08X\n", path_status_desc[j].desc, 1480 path_type_desc[i].desc, cfg->cascaded_expander, 1481 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1482 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1483 } else { 1484 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s " 1485 "WWN=%08X%08X\n", path_status_desc[j].desc, 1486 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy, 1487 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1488 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1489 } 1490 } 1491 return; 1492 } 1493 } 1494 1495 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s " 1496 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy, 1497 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK], 1498 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1])); 1499 } 1500 1501 /** 1502 * ipr_log_fabric_error - Log a fabric error. 1503 * @ioa_cfg: ioa config struct 1504 * @hostrcb: hostrcb struct 1505 * 1506 * Return value: 1507 * none 1508 **/ 1509 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg, 1510 struct ipr_hostrcb *hostrcb) 1511 { 1512 struct ipr_hostrcb_type_20_error *error; 1513 struct ipr_hostrcb_fabric_desc *fabric; 1514 struct ipr_hostrcb_config_element *cfg; 1515 int i, add_len; 1516 1517 error = &hostrcb->hcam.u.error.u.type_20_error; 1518 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0'; 1519 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason); 1520 1521 add_len = be32_to_cpu(hostrcb->hcam.length) - 1522 (offsetof(struct ipr_hostrcb_error, u) + 1523 offsetof(struct ipr_hostrcb_type_20_error, desc)); 1524 1525 for (i = 0, fabric = error->desc; i < error->num_entries; i++) { 1526 ipr_log_fabric_path(hostrcb, fabric); 1527 for_each_fabric_cfg(fabric, cfg) 1528 ipr_log_path_elem(hostrcb, cfg); 1529 1530 add_len -= be16_to_cpu(fabric->length); 1531 fabric = (struct ipr_hostrcb_fabric_desc *) 1532 ((unsigned long)fabric + be16_to_cpu(fabric->length)); 1533 } 1534 1535 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len); 1536 } 1537 1538 /** 1539 * ipr_log_generic_error - Log an adapter error. 1540 * @ioa_cfg: ioa config struct 1541 * @hostrcb: hostrcb struct 1542 * 1543 * Return value: 1544 * none 1545 **/ 1546 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg, 1547 struct ipr_hostrcb *hostrcb) 1548 { 1549 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data, 1550 be32_to_cpu(hostrcb->hcam.length)); 1551 } 1552 1553 /** 1554 * ipr_get_error - Find the specfied IOASC in the ipr_error_table. 1555 * @ioasc: IOASC 1556 * 1557 * This function will return the index of into the ipr_error_table 1558 * for the specified IOASC. If the IOASC is not in the table, 1559 * 0 will be returned, which points to the entry used for unknown errors. 1560 * 1561 * Return value: 1562 * index into the ipr_error_table 1563 **/ 1564 static u32 ipr_get_error(u32 ioasc) 1565 { 1566 int i; 1567 1568 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) 1569 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) 1570 return i; 1571 1572 return 0; 1573 } 1574 1575 /** 1576 * ipr_handle_log_data - Log an adapter error. 1577 * @ioa_cfg: ioa config struct 1578 * @hostrcb: hostrcb struct 1579 * 1580 * This function logs an adapter error to the system. 1581 * 1582 * Return value: 1583 * none 1584 **/ 1585 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg, 1586 struct ipr_hostrcb *hostrcb) 1587 { 1588 u32 ioasc; 1589 int error_index; 1590 1591 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY) 1592 return; 1593 1594 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST) 1595 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n"); 1596 1597 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc); 1598 1599 if (ioasc == IPR_IOASC_BUS_WAS_RESET || 1600 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) { 1601 /* Tell the midlayer we had a bus reset so it will handle the UA properly */ 1602 scsi_report_bus_reset(ioa_cfg->host, 1603 hostrcb->hcam.u.error.failing_dev_res_addr.bus); 1604 } 1605 1606 error_index = ipr_get_error(ioasc); 1607 1608 if (!ipr_error_table[error_index].log_hcam) 1609 return; 1610 1611 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error); 1612 1613 /* Set indication we have logged an error */ 1614 ioa_cfg->errors_logged++; 1615 1616 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam) 1617 return; 1618 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw)) 1619 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw)); 1620 1621 switch (hostrcb->hcam.overlay_id) { 1622 case IPR_HOST_RCB_OVERLAY_ID_2: 1623 ipr_log_cache_error(ioa_cfg, hostrcb); 1624 break; 1625 case IPR_HOST_RCB_OVERLAY_ID_3: 1626 ipr_log_config_error(ioa_cfg, hostrcb); 1627 break; 1628 case IPR_HOST_RCB_OVERLAY_ID_4: 1629 case IPR_HOST_RCB_OVERLAY_ID_6: 1630 ipr_log_array_error(ioa_cfg, hostrcb); 1631 break; 1632 case IPR_HOST_RCB_OVERLAY_ID_7: 1633 ipr_log_dual_ioa_error(ioa_cfg, hostrcb); 1634 break; 1635 case IPR_HOST_RCB_OVERLAY_ID_12: 1636 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb); 1637 break; 1638 case IPR_HOST_RCB_OVERLAY_ID_13: 1639 ipr_log_enhanced_config_error(ioa_cfg, hostrcb); 1640 break; 1641 case IPR_HOST_RCB_OVERLAY_ID_14: 1642 case IPR_HOST_RCB_OVERLAY_ID_16: 1643 ipr_log_enhanced_array_error(ioa_cfg, hostrcb); 1644 break; 1645 case IPR_HOST_RCB_OVERLAY_ID_17: 1646 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb); 1647 break; 1648 case IPR_HOST_RCB_OVERLAY_ID_20: 1649 ipr_log_fabric_error(ioa_cfg, hostrcb); 1650 break; 1651 case IPR_HOST_RCB_OVERLAY_ID_1: 1652 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT: 1653 default: 1654 ipr_log_generic_error(ioa_cfg, hostrcb); 1655 break; 1656 } 1657 } 1658 1659 /** 1660 * ipr_process_error - Op done function for an adapter error log. 1661 * @ipr_cmd: ipr command struct 1662 * 1663 * This function is the op done function for an error log host 1664 * controlled async from the adapter. It will log the error and 1665 * send the HCAM back to the adapter. 1666 * 1667 * Return value: 1668 * none 1669 **/ 1670 static void ipr_process_error(struct ipr_cmnd *ipr_cmd) 1671 { 1672 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1673 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb; 1674 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 1675 1676 list_del(&hostrcb->queue); 1677 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 1678 1679 if (!ioasc) { 1680 ipr_handle_log_data(ioa_cfg, hostrcb); 1681 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) { 1682 dev_err(&ioa_cfg->pdev->dev, 1683 "Host RCB failed with IOASC: 0x%08X\n", ioasc); 1684 } 1685 1686 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 1687 } 1688 1689 /** 1690 * ipr_timeout - An internally generated op has timed out. 1691 * @ipr_cmd: ipr command struct 1692 * 1693 * This function blocks host requests and initiates an 1694 * adapter reset. 1695 * 1696 * Return value: 1697 * none 1698 **/ 1699 static void ipr_timeout(struct ipr_cmnd *ipr_cmd) 1700 { 1701 unsigned long lock_flags = 0; 1702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1703 1704 ENTER; 1705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1706 1707 ioa_cfg->errors_logged++; 1708 dev_err(&ioa_cfg->pdev->dev, 1709 "Adapter being reset due to command timeout.\n"); 1710 1711 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1712 ioa_cfg->sdt_state = GET_DUMP; 1713 1714 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) 1715 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1716 1717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1718 LEAVE; 1719 } 1720 1721 /** 1722 * ipr_oper_timeout - Adapter timed out transitioning to operational 1723 * @ipr_cmd: ipr command struct 1724 * 1725 * This function blocks host requests and initiates an 1726 * adapter reset. 1727 * 1728 * Return value: 1729 * none 1730 **/ 1731 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd) 1732 { 1733 unsigned long lock_flags = 0; 1734 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 1735 1736 ENTER; 1737 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 1738 1739 ioa_cfg->errors_logged++; 1740 dev_err(&ioa_cfg->pdev->dev, 1741 "Adapter timed out transitioning to operational.\n"); 1742 1743 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 1744 ioa_cfg->sdt_state = GET_DUMP; 1745 1746 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) { 1747 if (ipr_fastfail) 1748 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES; 1749 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 1750 } 1751 1752 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 1753 LEAVE; 1754 } 1755 1756 /** 1757 * ipr_reset_reload - Reset/Reload the IOA 1758 * @ioa_cfg: ioa config struct 1759 * @shutdown_type: shutdown type 1760 * 1761 * This function resets the adapter and re-initializes it. 1762 * This function assumes that all new host commands have been stopped. 1763 * Return value: 1764 * SUCCESS / FAILED 1765 **/ 1766 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg, 1767 enum ipr_shutdown_type shutdown_type) 1768 { 1769 if (!ioa_cfg->in_reset_reload) 1770 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 1771 1772 spin_unlock_irq(ioa_cfg->host->host_lock); 1773 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 1774 spin_lock_irq(ioa_cfg->host->host_lock); 1775 1776 /* If we got hit with a host reset while we were already resetting 1777 the adapter for some reason, and the reset failed. */ 1778 if (ioa_cfg->ioa_is_dead) { 1779 ipr_trace; 1780 return FAILED; 1781 } 1782 1783 return SUCCESS; 1784 } 1785 1786 /** 1787 * ipr_find_ses_entry - Find matching SES in SES table 1788 * @res: resource entry struct of SES 1789 * 1790 * Return value: 1791 * pointer to SES table entry / NULL on failure 1792 **/ 1793 static const struct ipr_ses_table_entry * 1794 ipr_find_ses_entry(struct ipr_resource_entry *res) 1795 { 1796 int i, j, matches; 1797 const struct ipr_ses_table_entry *ste = ipr_ses_table; 1798 1799 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) { 1800 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) { 1801 if (ste->compare_product_id_byte[j] == 'X') { 1802 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j]) 1803 matches++; 1804 else 1805 break; 1806 } else 1807 matches++; 1808 } 1809 1810 if (matches == IPR_PROD_ID_LEN) 1811 return ste; 1812 } 1813 1814 return NULL; 1815 } 1816 1817 /** 1818 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus 1819 * @ioa_cfg: ioa config struct 1820 * @bus: SCSI bus 1821 * @bus_width: bus width 1822 * 1823 * Return value: 1824 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz 1825 * For a 2-byte wide SCSI bus, the maximum transfer speed is 1826 * twice the maximum transfer rate (e.g. for a wide enabled bus, 1827 * max 160MHz = max 320MB/sec). 1828 **/ 1829 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width) 1830 { 1831 struct ipr_resource_entry *res; 1832 const struct ipr_ses_table_entry *ste; 1833 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width); 1834 1835 /* Loop through each config table entry in the config table buffer */ 1836 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 1837 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data))) 1838 continue; 1839 1840 if (bus != res->cfgte.res_addr.bus) 1841 continue; 1842 1843 if (!(ste = ipr_find_ses_entry(res))) 1844 continue; 1845 1846 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8); 1847 } 1848 1849 return max_xfer_rate; 1850 } 1851 1852 /** 1853 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA 1854 * @ioa_cfg: ioa config struct 1855 * @max_delay: max delay in micro-seconds to wait 1856 * 1857 * Waits for an IODEBUG ACK from the IOA, doing busy looping. 1858 * 1859 * Return value: 1860 * 0 on success / other on failure 1861 **/ 1862 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay) 1863 { 1864 volatile u32 pcii_reg; 1865 int delay = 1; 1866 1867 /* Read interrupt reg until IOA signals IO Debug Acknowledge */ 1868 while (delay < max_delay) { 1869 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 1870 1871 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE) 1872 return 0; 1873 1874 /* udelay cannot be used if delay is more than a few milliseconds */ 1875 if ((delay / 1000) > MAX_UDELAY_MS) 1876 mdelay(delay / 1000); 1877 else 1878 udelay(delay); 1879 1880 delay += delay; 1881 } 1882 return -EIO; 1883 } 1884 1885 /** 1886 * ipr_get_ldump_data_section - Dump IOA memory 1887 * @ioa_cfg: ioa config struct 1888 * @start_addr: adapter address to dump 1889 * @dest: destination kernel buffer 1890 * @length_in_words: length to dump in 4 byte words 1891 * 1892 * Return value: 1893 * 0 on success / -EIO on failure 1894 **/ 1895 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg, 1896 u32 start_addr, 1897 __be32 *dest, u32 length_in_words) 1898 { 1899 volatile u32 temp_pcii_reg; 1900 int i, delay = 0; 1901 1902 /* Write IOA interrupt reg starting LDUMP state */ 1903 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT), 1904 ioa_cfg->regs.set_uproc_interrupt_reg); 1905 1906 /* Wait for IO debug acknowledge */ 1907 if (ipr_wait_iodbg_ack(ioa_cfg, 1908 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) { 1909 dev_err(&ioa_cfg->pdev->dev, 1910 "IOA dump long data transfer timeout\n"); 1911 return -EIO; 1912 } 1913 1914 /* Signal LDUMP interlocked - clear IO debug ack */ 1915 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1916 ioa_cfg->regs.clr_interrupt_reg); 1917 1918 /* Write Mailbox with starting address */ 1919 writel(start_addr, ioa_cfg->ioa_mailbox); 1920 1921 /* Signal address valid - clear IOA Reset alert */ 1922 writel(IPR_UPROCI_RESET_ALERT, 1923 ioa_cfg->regs.clr_uproc_interrupt_reg); 1924 1925 for (i = 0; i < length_in_words; i++) { 1926 /* Wait for IO debug acknowledge */ 1927 if (ipr_wait_iodbg_ack(ioa_cfg, 1928 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) { 1929 dev_err(&ioa_cfg->pdev->dev, 1930 "IOA dump short data transfer timeout\n"); 1931 return -EIO; 1932 } 1933 1934 /* Read data from mailbox and increment destination pointer */ 1935 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox)); 1936 dest++; 1937 1938 /* For all but the last word of data, signal data received */ 1939 if (i < (length_in_words - 1)) { 1940 /* Signal dump data received - Clear IO debug Ack */ 1941 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1942 ioa_cfg->regs.clr_interrupt_reg); 1943 } 1944 } 1945 1946 /* Signal end of block transfer. Set reset alert then clear IO debug ack */ 1947 writel(IPR_UPROCI_RESET_ALERT, 1948 ioa_cfg->regs.set_uproc_interrupt_reg); 1949 1950 writel(IPR_UPROCI_IO_DEBUG_ALERT, 1951 ioa_cfg->regs.clr_uproc_interrupt_reg); 1952 1953 /* Signal dump data received - Clear IO debug Ack */ 1954 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, 1955 ioa_cfg->regs.clr_interrupt_reg); 1956 1957 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */ 1958 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) { 1959 temp_pcii_reg = 1960 readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 1961 1962 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT)) 1963 return 0; 1964 1965 udelay(10); 1966 delay += 10; 1967 } 1968 1969 return 0; 1970 } 1971 1972 #ifdef CONFIG_SCSI_IPR_DUMP 1973 /** 1974 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer 1975 * @ioa_cfg: ioa config struct 1976 * @pci_address: adapter address 1977 * @length: length of data to copy 1978 * 1979 * Copy data from PCI adapter to kernel buffer. 1980 * Note: length MUST be a 4 byte multiple 1981 * Return value: 1982 * 0 on success / other on failure 1983 **/ 1984 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg, 1985 unsigned long pci_address, u32 length) 1986 { 1987 int bytes_copied = 0; 1988 int cur_len, rc, rem_len, rem_page_len; 1989 __be32 *page; 1990 unsigned long lock_flags = 0; 1991 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump; 1992 1993 while (bytes_copied < length && 1994 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) { 1995 if (ioa_dump->page_offset >= PAGE_SIZE || 1996 ioa_dump->page_offset == 0) { 1997 page = (__be32 *)__get_free_page(GFP_ATOMIC); 1998 1999 if (!page) { 2000 ipr_trace; 2001 return bytes_copied; 2002 } 2003 2004 ioa_dump->page_offset = 0; 2005 ioa_dump->ioa_data[ioa_dump->next_page_index] = page; 2006 ioa_dump->next_page_index++; 2007 } else 2008 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1]; 2009 2010 rem_len = length - bytes_copied; 2011 rem_page_len = PAGE_SIZE - ioa_dump->page_offset; 2012 cur_len = min(rem_len, rem_page_len); 2013 2014 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2015 if (ioa_cfg->sdt_state == ABORT_DUMP) { 2016 rc = -EIO; 2017 } else { 2018 rc = ipr_get_ldump_data_section(ioa_cfg, 2019 pci_address + bytes_copied, 2020 &page[ioa_dump->page_offset / 4], 2021 (cur_len / sizeof(u32))); 2022 } 2023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2024 2025 if (!rc) { 2026 ioa_dump->page_offset += cur_len; 2027 bytes_copied += cur_len; 2028 } else { 2029 ipr_trace; 2030 break; 2031 } 2032 schedule(); 2033 } 2034 2035 return bytes_copied; 2036 } 2037 2038 /** 2039 * ipr_init_dump_entry_hdr - Initialize a dump entry header. 2040 * @hdr: dump entry header struct 2041 * 2042 * Return value: 2043 * nothing 2044 **/ 2045 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr) 2046 { 2047 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER; 2048 hdr->num_elems = 1; 2049 hdr->offset = sizeof(*hdr); 2050 hdr->status = IPR_DUMP_STATUS_SUCCESS; 2051 } 2052 2053 /** 2054 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump. 2055 * @ioa_cfg: ioa config struct 2056 * @driver_dump: driver dump struct 2057 * 2058 * Return value: 2059 * nothing 2060 **/ 2061 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg, 2062 struct ipr_driver_dump *driver_dump) 2063 { 2064 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2065 2066 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr); 2067 driver_dump->ioa_type_entry.hdr.len = 2068 sizeof(struct ipr_dump_ioa_type_entry) - 2069 sizeof(struct ipr_dump_entry_header); 2070 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2071 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID; 2072 driver_dump->ioa_type_entry.type = ioa_cfg->type; 2073 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) | 2074 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) | 2075 ucode_vpd->minor_release[1]; 2076 driver_dump->hdr.num_entries++; 2077 } 2078 2079 /** 2080 * ipr_dump_version_data - Fill in the driver version in the dump. 2081 * @ioa_cfg: ioa config struct 2082 * @driver_dump: driver dump struct 2083 * 2084 * Return value: 2085 * nothing 2086 **/ 2087 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg, 2088 struct ipr_driver_dump *driver_dump) 2089 { 2090 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr); 2091 driver_dump->version_entry.hdr.len = 2092 sizeof(struct ipr_dump_version_entry) - 2093 sizeof(struct ipr_dump_entry_header); 2094 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2095 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID; 2096 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION); 2097 driver_dump->hdr.num_entries++; 2098 } 2099 2100 /** 2101 * ipr_dump_trace_data - Fill in the IOA trace in the dump. 2102 * @ioa_cfg: ioa config struct 2103 * @driver_dump: driver dump struct 2104 * 2105 * Return value: 2106 * nothing 2107 **/ 2108 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg, 2109 struct ipr_driver_dump *driver_dump) 2110 { 2111 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr); 2112 driver_dump->trace_entry.hdr.len = 2113 sizeof(struct ipr_dump_trace_entry) - 2114 sizeof(struct ipr_dump_entry_header); 2115 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2116 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID; 2117 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE); 2118 driver_dump->hdr.num_entries++; 2119 } 2120 2121 /** 2122 * ipr_dump_location_data - Fill in the IOA location in the dump. 2123 * @ioa_cfg: ioa config struct 2124 * @driver_dump: driver dump struct 2125 * 2126 * Return value: 2127 * nothing 2128 **/ 2129 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg, 2130 struct ipr_driver_dump *driver_dump) 2131 { 2132 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr); 2133 driver_dump->location_entry.hdr.len = 2134 sizeof(struct ipr_dump_location_entry) - 2135 sizeof(struct ipr_dump_entry_header); 2136 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII; 2137 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID; 2138 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id); 2139 driver_dump->hdr.num_entries++; 2140 } 2141 2142 /** 2143 * ipr_get_ioa_dump - Perform a dump of the driver and adapter. 2144 * @ioa_cfg: ioa config struct 2145 * @dump: dump struct 2146 * 2147 * Return value: 2148 * nothing 2149 **/ 2150 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump) 2151 { 2152 unsigned long start_addr, sdt_word; 2153 unsigned long lock_flags = 0; 2154 struct ipr_driver_dump *driver_dump = &dump->driver_dump; 2155 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump; 2156 u32 num_entries, start_off, end_off; 2157 u32 bytes_to_copy, bytes_copied, rc; 2158 struct ipr_sdt *sdt; 2159 int i; 2160 2161 ENTER; 2162 2163 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2164 2165 if (ioa_cfg->sdt_state != GET_DUMP) { 2166 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2167 return; 2168 } 2169 2170 start_addr = readl(ioa_cfg->ioa_mailbox); 2171 2172 if (!ipr_sdt_is_fmt2(start_addr)) { 2173 dev_err(&ioa_cfg->pdev->dev, 2174 "Invalid dump table format: %lx\n", start_addr); 2175 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2176 return; 2177 } 2178 2179 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n"); 2180 2181 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER; 2182 2183 /* Initialize the overall dump header */ 2184 driver_dump->hdr.len = sizeof(struct ipr_driver_dump); 2185 driver_dump->hdr.num_entries = 1; 2186 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header); 2187 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS; 2188 driver_dump->hdr.os = IPR_DUMP_OS_LINUX; 2189 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME; 2190 2191 ipr_dump_version_data(ioa_cfg, driver_dump); 2192 ipr_dump_location_data(ioa_cfg, driver_dump); 2193 ipr_dump_ioa_type_data(ioa_cfg, driver_dump); 2194 ipr_dump_trace_data(ioa_cfg, driver_dump); 2195 2196 /* Update dump_header */ 2197 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header); 2198 2199 /* IOA Dump entry */ 2200 ipr_init_dump_entry_hdr(&ioa_dump->hdr); 2201 ioa_dump->format = IPR_SDT_FMT2; 2202 ioa_dump->hdr.len = 0; 2203 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY; 2204 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID; 2205 2206 /* First entries in sdt are actually a list of dump addresses and 2207 lengths to gather the real dump data. sdt represents the pointer 2208 to the ioa generated dump table. Dump data will be extracted based 2209 on entries in this table */ 2210 sdt = &ioa_dump->sdt; 2211 2212 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt, 2213 sizeof(struct ipr_sdt) / sizeof(__be32)); 2214 2215 /* Smart Dump table is ready to use and the first entry is valid */ 2216 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) { 2217 dev_err(&ioa_cfg->pdev->dev, 2218 "Dump of IOA failed. Dump table not valid: %d, %X.\n", 2219 rc, be32_to_cpu(sdt->hdr.state)); 2220 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED; 2221 ioa_cfg->sdt_state = DUMP_OBTAINED; 2222 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2223 return; 2224 } 2225 2226 num_entries = be32_to_cpu(sdt->hdr.num_entries_used); 2227 2228 if (num_entries > IPR_NUM_SDT_ENTRIES) 2229 num_entries = IPR_NUM_SDT_ENTRIES; 2230 2231 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2232 2233 for (i = 0; i < num_entries; i++) { 2234 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) { 2235 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2236 break; 2237 } 2238 2239 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) { 2240 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset); 2241 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK; 2242 end_off = be32_to_cpu(sdt->entry[i].end_offset); 2243 2244 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) { 2245 bytes_to_copy = end_off - start_off; 2246 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) { 2247 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY; 2248 continue; 2249 } 2250 2251 /* Copy data from adapter to driver buffers */ 2252 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word, 2253 bytes_to_copy); 2254 2255 ioa_dump->hdr.len += bytes_copied; 2256 2257 if (bytes_copied != bytes_to_copy) { 2258 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS; 2259 break; 2260 } 2261 } 2262 } 2263 } 2264 2265 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n"); 2266 2267 /* Update dump_header */ 2268 driver_dump->hdr.len += ioa_dump->hdr.len; 2269 wmb(); 2270 ioa_cfg->sdt_state = DUMP_OBTAINED; 2271 LEAVE; 2272 } 2273 2274 #else 2275 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0) 2276 #endif 2277 2278 /** 2279 * ipr_release_dump - Free adapter dump memory 2280 * @kref: kref struct 2281 * 2282 * Return value: 2283 * nothing 2284 **/ 2285 static void ipr_release_dump(struct kref *kref) 2286 { 2287 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref); 2288 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg; 2289 unsigned long lock_flags = 0; 2290 int i; 2291 2292 ENTER; 2293 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2294 ioa_cfg->dump = NULL; 2295 ioa_cfg->sdt_state = INACTIVE; 2296 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2297 2298 for (i = 0; i < dump->ioa_dump.next_page_index; i++) 2299 free_page((unsigned long) dump->ioa_dump.ioa_data[i]); 2300 2301 kfree(dump); 2302 LEAVE; 2303 } 2304 2305 /** 2306 * ipr_worker_thread - Worker thread 2307 * @work: ioa config struct 2308 * 2309 * Called at task level from a work thread. This function takes care 2310 * of adding and removing device from the mid-layer as configuration 2311 * changes are detected by the adapter. 2312 * 2313 * Return value: 2314 * nothing 2315 **/ 2316 static void ipr_worker_thread(struct work_struct *work) 2317 { 2318 unsigned long lock_flags; 2319 struct ipr_resource_entry *res; 2320 struct scsi_device *sdev; 2321 struct ipr_dump *dump; 2322 struct ipr_ioa_cfg *ioa_cfg = 2323 container_of(work, struct ipr_ioa_cfg, work_q); 2324 u8 bus, target, lun; 2325 int did_work; 2326 2327 ENTER; 2328 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2329 2330 if (ioa_cfg->sdt_state == GET_DUMP) { 2331 dump = ioa_cfg->dump; 2332 if (!dump) { 2333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2334 return; 2335 } 2336 kref_get(&dump->kref); 2337 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2338 ipr_get_ioa_dump(ioa_cfg, dump); 2339 kref_put(&dump->kref, ipr_release_dump); 2340 2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2342 if (ioa_cfg->sdt_state == DUMP_OBTAINED) 2343 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2345 return; 2346 } 2347 2348 restart: 2349 do { 2350 did_work = 0; 2351 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) { 2352 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2353 return; 2354 } 2355 2356 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2357 if (res->del_from_ml && res->sdev) { 2358 did_work = 1; 2359 sdev = res->sdev; 2360 if (!scsi_device_get(sdev)) { 2361 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 2362 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2363 scsi_remove_device(sdev); 2364 scsi_device_put(sdev); 2365 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2366 } 2367 break; 2368 } 2369 } 2370 } while(did_work); 2371 2372 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 2373 if (res->add_to_ml) { 2374 bus = res->cfgte.res_addr.bus; 2375 target = res->cfgte.res_addr.target; 2376 lun = res->cfgte.res_addr.lun; 2377 res->add_to_ml = 0; 2378 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2379 scsi_add_device(ioa_cfg->host, bus, target, lun); 2380 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2381 goto restart; 2382 } 2383 } 2384 2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2386 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE); 2387 LEAVE; 2388 } 2389 2390 #ifdef CONFIG_SCSI_IPR_TRACE 2391 /** 2392 * ipr_read_trace - Dump the adapter trace 2393 * @kobj: kobject struct 2394 * @buf: buffer 2395 * @off: offset 2396 * @count: buffer size 2397 * 2398 * Return value: 2399 * number of bytes printed to buffer 2400 **/ 2401 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf, 2402 loff_t off, size_t count) 2403 { 2404 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 2405 struct Scsi_Host *shost = class_to_shost(cdev); 2406 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2407 unsigned long lock_flags = 0; 2408 int size = IPR_TRACE_SIZE; 2409 char *src = (char *)ioa_cfg->trace; 2410 2411 if (off > size) 2412 return 0; 2413 if (off + count > size) { 2414 size -= off; 2415 count = size; 2416 } 2417 2418 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2419 memcpy(buf, &src[off], count); 2420 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2421 return count; 2422 } 2423 2424 static struct bin_attribute ipr_trace_attr = { 2425 .attr = { 2426 .name = "trace", 2427 .mode = S_IRUGO, 2428 }, 2429 .size = 0, 2430 .read = ipr_read_trace, 2431 }; 2432 #endif 2433 2434 static const struct { 2435 enum ipr_cache_state state; 2436 char *name; 2437 } cache_state [] = { 2438 { CACHE_NONE, "none" }, 2439 { CACHE_DISABLED, "disabled" }, 2440 { CACHE_ENABLED, "enabled" } 2441 }; 2442 2443 /** 2444 * ipr_show_write_caching - Show the write caching attribute 2445 * @class_dev: class device struct 2446 * @buf: buffer 2447 * 2448 * Return value: 2449 * number of bytes printed to buffer 2450 **/ 2451 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf) 2452 { 2453 struct Scsi_Host *shost = class_to_shost(class_dev); 2454 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2455 unsigned long lock_flags = 0; 2456 int i, len = 0; 2457 2458 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2459 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2460 if (cache_state[i].state == ioa_cfg->cache_state) { 2461 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name); 2462 break; 2463 } 2464 } 2465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2466 return len; 2467 } 2468 2469 2470 /** 2471 * ipr_store_write_caching - Enable/disable adapter write cache 2472 * @class_dev: class_device struct 2473 * @buf: buffer 2474 * @count: buffer size 2475 * 2476 * This function will enable/disable adapter write cache. 2477 * 2478 * Return value: 2479 * count on success / other on failure 2480 **/ 2481 static ssize_t ipr_store_write_caching(struct class_device *class_dev, 2482 const char *buf, size_t count) 2483 { 2484 struct Scsi_Host *shost = class_to_shost(class_dev); 2485 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2486 unsigned long lock_flags = 0; 2487 enum ipr_cache_state new_state = CACHE_INVALID; 2488 int i; 2489 2490 if (!capable(CAP_SYS_ADMIN)) 2491 return -EACCES; 2492 if (ioa_cfg->cache_state == CACHE_NONE) 2493 return -EINVAL; 2494 2495 for (i = 0; i < ARRAY_SIZE(cache_state); i++) { 2496 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) { 2497 new_state = cache_state[i].state; 2498 break; 2499 } 2500 } 2501 2502 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED) 2503 return -EINVAL; 2504 2505 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2506 if (ioa_cfg->cache_state == new_state) { 2507 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2508 return count; 2509 } 2510 2511 ioa_cfg->cache_state = new_state; 2512 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n", 2513 new_state == CACHE_ENABLED ? "Enabling" : "Disabling"); 2514 if (!ioa_cfg->in_reset_reload) 2515 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2517 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2518 2519 return count; 2520 } 2521 2522 static struct class_device_attribute ipr_ioa_cache_attr = { 2523 .attr = { 2524 .name = "write_cache", 2525 .mode = S_IRUGO | S_IWUSR, 2526 }, 2527 .show = ipr_show_write_caching, 2528 .store = ipr_store_write_caching 2529 }; 2530 2531 /** 2532 * ipr_show_fw_version - Show the firmware version 2533 * @class_dev: class device struct 2534 * @buf: buffer 2535 * 2536 * Return value: 2537 * number of bytes printed to buffer 2538 **/ 2539 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf) 2540 { 2541 struct Scsi_Host *shost = class_to_shost(class_dev); 2542 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2543 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 2544 unsigned long lock_flags = 0; 2545 int len; 2546 2547 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2548 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n", 2549 ucode_vpd->major_release, ucode_vpd->card_type, 2550 ucode_vpd->minor_release[0], 2551 ucode_vpd->minor_release[1]); 2552 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2553 return len; 2554 } 2555 2556 static struct class_device_attribute ipr_fw_version_attr = { 2557 .attr = { 2558 .name = "fw_version", 2559 .mode = S_IRUGO, 2560 }, 2561 .show = ipr_show_fw_version, 2562 }; 2563 2564 /** 2565 * ipr_show_log_level - Show the adapter's error logging level 2566 * @class_dev: class device struct 2567 * @buf: buffer 2568 * 2569 * Return value: 2570 * number of bytes printed to buffer 2571 **/ 2572 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf) 2573 { 2574 struct Scsi_Host *shost = class_to_shost(class_dev); 2575 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2576 unsigned long lock_flags = 0; 2577 int len; 2578 2579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2580 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level); 2581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2582 return len; 2583 } 2584 2585 /** 2586 * ipr_store_log_level - Change the adapter's error logging level 2587 * @class_dev: class device struct 2588 * @buf: buffer 2589 * 2590 * Return value: 2591 * number of bytes printed to buffer 2592 **/ 2593 static ssize_t ipr_store_log_level(struct class_device *class_dev, 2594 const char *buf, size_t count) 2595 { 2596 struct Scsi_Host *shost = class_to_shost(class_dev); 2597 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2598 unsigned long lock_flags = 0; 2599 2600 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2601 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10); 2602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2603 return strlen(buf); 2604 } 2605 2606 static struct class_device_attribute ipr_log_level_attr = { 2607 .attr = { 2608 .name = "log_level", 2609 .mode = S_IRUGO | S_IWUSR, 2610 }, 2611 .show = ipr_show_log_level, 2612 .store = ipr_store_log_level 2613 }; 2614 2615 /** 2616 * ipr_store_diagnostics - IOA Diagnostics interface 2617 * @class_dev: class_device struct 2618 * @buf: buffer 2619 * @count: buffer size 2620 * 2621 * This function will reset the adapter and wait a reasonable 2622 * amount of time for any errors that the adapter might log. 2623 * 2624 * Return value: 2625 * count on success / other on failure 2626 **/ 2627 static ssize_t ipr_store_diagnostics(struct class_device *class_dev, 2628 const char *buf, size_t count) 2629 { 2630 struct Scsi_Host *shost = class_to_shost(class_dev); 2631 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2632 unsigned long lock_flags = 0; 2633 int rc = count; 2634 2635 if (!capable(CAP_SYS_ADMIN)) 2636 return -EACCES; 2637 2638 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2639 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2640 ioa_cfg->errors_logged = 0; 2641 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2642 2643 if (ioa_cfg->in_reset_reload) { 2644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2645 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2646 2647 /* Wait for a second for any errors to be logged */ 2648 msleep(1000); 2649 } else { 2650 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2651 return -EIO; 2652 } 2653 2654 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2655 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged) 2656 rc = -EIO; 2657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2658 2659 return rc; 2660 } 2661 2662 static struct class_device_attribute ipr_diagnostics_attr = { 2663 .attr = { 2664 .name = "run_diagnostics", 2665 .mode = S_IWUSR, 2666 }, 2667 .store = ipr_store_diagnostics 2668 }; 2669 2670 /** 2671 * ipr_show_adapter_state - Show the adapter's state 2672 * @class_dev: class device struct 2673 * @buf: buffer 2674 * 2675 * Return value: 2676 * number of bytes printed to buffer 2677 **/ 2678 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf) 2679 { 2680 struct Scsi_Host *shost = class_to_shost(class_dev); 2681 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2682 unsigned long lock_flags = 0; 2683 int len; 2684 2685 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2686 if (ioa_cfg->ioa_is_dead) 2687 len = snprintf(buf, PAGE_SIZE, "offline\n"); 2688 else 2689 len = snprintf(buf, PAGE_SIZE, "online\n"); 2690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2691 return len; 2692 } 2693 2694 /** 2695 * ipr_store_adapter_state - Change adapter state 2696 * @class_dev: class_device struct 2697 * @buf: buffer 2698 * @count: buffer size 2699 * 2700 * This function will change the adapter's state. 2701 * 2702 * Return value: 2703 * count on success / other on failure 2704 **/ 2705 static ssize_t ipr_store_adapter_state(struct class_device *class_dev, 2706 const char *buf, size_t count) 2707 { 2708 struct Scsi_Host *shost = class_to_shost(class_dev); 2709 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2710 unsigned long lock_flags; 2711 int result = count; 2712 2713 if (!capable(CAP_SYS_ADMIN)) 2714 return -EACCES; 2715 2716 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2717 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) { 2718 ioa_cfg->ioa_is_dead = 0; 2719 ioa_cfg->reset_retries = 0; 2720 ioa_cfg->in_ioa_bringdown = 0; 2721 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 2722 } 2723 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2724 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2725 2726 return result; 2727 } 2728 2729 static struct class_device_attribute ipr_ioa_state_attr = { 2730 .attr = { 2731 .name = "state", 2732 .mode = S_IRUGO | S_IWUSR, 2733 }, 2734 .show = ipr_show_adapter_state, 2735 .store = ipr_store_adapter_state 2736 }; 2737 2738 /** 2739 * ipr_store_reset_adapter - Reset the adapter 2740 * @class_dev: class_device struct 2741 * @buf: buffer 2742 * @count: buffer size 2743 * 2744 * This function will reset the adapter. 2745 * 2746 * Return value: 2747 * count on success / other on failure 2748 **/ 2749 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev, 2750 const char *buf, size_t count) 2751 { 2752 struct Scsi_Host *shost = class_to_shost(class_dev); 2753 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 2754 unsigned long lock_flags; 2755 int result = count; 2756 2757 if (!capable(CAP_SYS_ADMIN)) 2758 return -EACCES; 2759 2760 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2761 if (!ioa_cfg->in_reset_reload) 2762 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2763 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2764 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2765 2766 return result; 2767 } 2768 2769 static struct class_device_attribute ipr_ioa_reset_attr = { 2770 .attr = { 2771 .name = "reset_host", 2772 .mode = S_IWUSR, 2773 }, 2774 .store = ipr_store_reset_adapter 2775 }; 2776 2777 /** 2778 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer 2779 * @buf_len: buffer length 2780 * 2781 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather 2782 * list to use for microcode download 2783 * 2784 * Return value: 2785 * pointer to sglist / NULL on failure 2786 **/ 2787 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) 2788 { 2789 int sg_size, order, bsize_elem, num_elem, i, j; 2790 struct ipr_sglist *sglist; 2791 struct scatterlist *scatterlist; 2792 struct page *page; 2793 2794 /* Get the minimum size per scatter/gather element */ 2795 sg_size = buf_len / (IPR_MAX_SGLIST - 1); 2796 2797 /* Get the actual size per element */ 2798 order = get_order(sg_size); 2799 2800 /* Determine the actual number of bytes per element */ 2801 bsize_elem = PAGE_SIZE * (1 << order); 2802 2803 /* Determine the actual number of sg entries needed */ 2804 if (buf_len % bsize_elem) 2805 num_elem = (buf_len / bsize_elem) + 1; 2806 else 2807 num_elem = buf_len / bsize_elem; 2808 2809 /* Allocate a scatter/gather list for the DMA */ 2810 sglist = kzalloc(sizeof(struct ipr_sglist) + 2811 (sizeof(struct scatterlist) * (num_elem - 1)), 2812 GFP_KERNEL); 2813 2814 if (sglist == NULL) { 2815 ipr_trace; 2816 return NULL; 2817 } 2818 2819 scatterlist = sglist->scatterlist; 2820 2821 sglist->order = order; 2822 sglist->num_sg = num_elem; 2823 2824 /* Allocate a bunch of sg elements */ 2825 for (i = 0; i < num_elem; i++) { 2826 page = alloc_pages(GFP_KERNEL, order); 2827 if (!page) { 2828 ipr_trace; 2829 2830 /* Free up what we already allocated */ 2831 for (j = i - 1; j >= 0; j--) 2832 __free_pages(scatterlist[j].page, order); 2833 kfree(sglist); 2834 return NULL; 2835 } 2836 2837 scatterlist[i].page = page; 2838 } 2839 2840 return sglist; 2841 } 2842 2843 /** 2844 * ipr_free_ucode_buffer - Frees a microcode download buffer 2845 * @p_dnld: scatter/gather list pointer 2846 * 2847 * Free a DMA'able ucode download buffer previously allocated with 2848 * ipr_alloc_ucode_buffer 2849 * 2850 * Return value: 2851 * nothing 2852 **/ 2853 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) 2854 { 2855 int i; 2856 2857 for (i = 0; i < sglist->num_sg; i++) 2858 __free_pages(sglist->scatterlist[i].page, sglist->order); 2859 2860 kfree(sglist); 2861 } 2862 2863 /** 2864 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer 2865 * @sglist: scatter/gather list pointer 2866 * @buffer: buffer pointer 2867 * @len: buffer length 2868 * 2869 * Copy a microcode image from a user buffer into a buffer allocated by 2870 * ipr_alloc_ucode_buffer 2871 * 2872 * Return value: 2873 * 0 on success / other on failure 2874 **/ 2875 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist, 2876 u8 *buffer, u32 len) 2877 { 2878 int bsize_elem, i, result = 0; 2879 struct scatterlist *scatterlist; 2880 void *kaddr; 2881 2882 /* Determine the actual number of bytes per element */ 2883 bsize_elem = PAGE_SIZE * (1 << sglist->order); 2884 2885 scatterlist = sglist->scatterlist; 2886 2887 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { 2888 kaddr = kmap(scatterlist[i].page); 2889 memcpy(kaddr, buffer, bsize_elem); 2890 kunmap(scatterlist[i].page); 2891 2892 scatterlist[i].length = bsize_elem; 2893 2894 if (result != 0) { 2895 ipr_trace; 2896 return result; 2897 } 2898 } 2899 2900 if (len % bsize_elem) { 2901 kaddr = kmap(scatterlist[i].page); 2902 memcpy(kaddr, buffer, len % bsize_elem); 2903 kunmap(scatterlist[i].page); 2904 2905 scatterlist[i].length = len % bsize_elem; 2906 } 2907 2908 sglist->buffer_len = len; 2909 return result; 2910 } 2911 2912 /** 2913 * ipr_build_ucode_ioadl - Build a microcode download IOADL 2914 * @ipr_cmd: ipr command struct 2915 * @sglist: scatter/gather list 2916 * 2917 * Builds a microcode download IOA data list (IOADL). 2918 * 2919 **/ 2920 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd, 2921 struct ipr_sglist *sglist) 2922 { 2923 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 2924 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 2925 struct scatterlist *scatterlist = sglist->scatterlist; 2926 int i; 2927 2928 ipr_cmd->dma_use_sg = sglist->num_dma_sg; 2929 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 2930 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len); 2931 ioarcb->write_ioadl_len = 2932 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 2933 2934 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 2935 ioadl[i].flags_and_data_len = 2936 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i])); 2937 ioadl[i].address = 2938 cpu_to_be32(sg_dma_address(&scatterlist[i])); 2939 } 2940 2941 ioadl[i-1].flags_and_data_len |= 2942 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 2943 } 2944 2945 /** 2946 * ipr_update_ioa_ucode - Update IOA's microcode 2947 * @ioa_cfg: ioa config struct 2948 * @sglist: scatter/gather list 2949 * 2950 * Initiate an adapter reset to update the IOA's microcode 2951 * 2952 * Return value: 2953 * 0 on success / -EIO on failure 2954 **/ 2955 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg, 2956 struct ipr_sglist *sglist) 2957 { 2958 unsigned long lock_flags; 2959 2960 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2961 2962 if (ioa_cfg->ucode_sglist) { 2963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2964 dev_err(&ioa_cfg->pdev->dev, 2965 "Microcode download already in progress\n"); 2966 return -EIO; 2967 } 2968 2969 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist, 2970 sglist->num_sg, DMA_TO_DEVICE); 2971 2972 if (!sglist->num_dma_sg) { 2973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2974 dev_err(&ioa_cfg->pdev->dev, 2975 "Failed to map microcode download buffer!\n"); 2976 return -EIO; 2977 } 2978 2979 ioa_cfg->ucode_sglist = sglist; 2980 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); 2981 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2982 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 2983 2984 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 2985 ioa_cfg->ucode_sglist = NULL; 2986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 2987 return 0; 2988 } 2989 2990 /** 2991 * ipr_store_update_fw - Update the firmware on the adapter 2992 * @class_dev: class_device struct 2993 * @buf: buffer 2994 * @count: buffer size 2995 * 2996 * This function will update the firmware on the adapter. 2997 * 2998 * Return value: 2999 * count on success / other on failure 3000 **/ 3001 static ssize_t ipr_store_update_fw(struct class_device *class_dev, 3002 const char *buf, size_t count) 3003 { 3004 struct Scsi_Host *shost = class_to_shost(class_dev); 3005 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3006 struct ipr_ucode_image_header *image_hdr; 3007 const struct firmware *fw_entry; 3008 struct ipr_sglist *sglist; 3009 char fname[100]; 3010 char *src; 3011 int len, result, dnld_size; 3012 3013 if (!capable(CAP_SYS_ADMIN)) 3014 return -EACCES; 3015 3016 len = snprintf(fname, 99, "%s", buf); 3017 fname[len-1] = '\0'; 3018 3019 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) { 3020 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname); 3021 return -EIO; 3022 } 3023 3024 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data; 3025 3026 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size || 3027 (ioa_cfg->vpd_cbs->page3_data.card_type && 3028 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) { 3029 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n"); 3030 release_firmware(fw_entry); 3031 return -EINVAL; 3032 } 3033 3034 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length); 3035 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length); 3036 sglist = ipr_alloc_ucode_buffer(dnld_size); 3037 3038 if (!sglist) { 3039 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n"); 3040 release_firmware(fw_entry); 3041 return -ENOMEM; 3042 } 3043 3044 result = ipr_copy_ucode_buffer(sglist, src, dnld_size); 3045 3046 if (result) { 3047 dev_err(&ioa_cfg->pdev->dev, 3048 "Microcode buffer copy to DMA buffer failed\n"); 3049 goto out; 3050 } 3051 3052 result = ipr_update_ioa_ucode(ioa_cfg, sglist); 3053 3054 if (!result) 3055 result = count; 3056 out: 3057 ipr_free_ucode_buffer(sglist); 3058 release_firmware(fw_entry); 3059 return result; 3060 } 3061 3062 static struct class_device_attribute ipr_update_fw_attr = { 3063 .attr = { 3064 .name = "update_fw", 3065 .mode = S_IWUSR, 3066 }, 3067 .store = ipr_store_update_fw 3068 }; 3069 3070 static struct class_device_attribute *ipr_ioa_attrs[] = { 3071 &ipr_fw_version_attr, 3072 &ipr_log_level_attr, 3073 &ipr_diagnostics_attr, 3074 &ipr_ioa_state_attr, 3075 &ipr_ioa_reset_attr, 3076 &ipr_update_fw_attr, 3077 &ipr_ioa_cache_attr, 3078 NULL, 3079 }; 3080 3081 #ifdef CONFIG_SCSI_IPR_DUMP 3082 /** 3083 * ipr_read_dump - Dump the adapter 3084 * @kobj: kobject struct 3085 * @buf: buffer 3086 * @off: offset 3087 * @count: buffer size 3088 * 3089 * Return value: 3090 * number of bytes printed to buffer 3091 **/ 3092 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf, 3093 loff_t off, size_t count) 3094 { 3095 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3096 struct Scsi_Host *shost = class_to_shost(cdev); 3097 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3098 struct ipr_dump *dump; 3099 unsigned long lock_flags = 0; 3100 char *src; 3101 int len; 3102 size_t rc = count; 3103 3104 if (!capable(CAP_SYS_ADMIN)) 3105 return -EACCES; 3106 3107 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3108 dump = ioa_cfg->dump; 3109 3110 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) { 3111 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3112 return 0; 3113 } 3114 kref_get(&dump->kref); 3115 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3116 3117 if (off > dump->driver_dump.hdr.len) { 3118 kref_put(&dump->kref, ipr_release_dump); 3119 return 0; 3120 } 3121 3122 if (off + count > dump->driver_dump.hdr.len) { 3123 count = dump->driver_dump.hdr.len - off; 3124 rc = count; 3125 } 3126 3127 if (count && off < sizeof(dump->driver_dump)) { 3128 if (off + count > sizeof(dump->driver_dump)) 3129 len = sizeof(dump->driver_dump) - off; 3130 else 3131 len = count; 3132 src = (u8 *)&dump->driver_dump + off; 3133 memcpy(buf, src, len); 3134 buf += len; 3135 off += len; 3136 count -= len; 3137 } 3138 3139 off -= sizeof(dump->driver_dump); 3140 3141 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) { 3142 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data)) 3143 len = offsetof(struct ipr_ioa_dump, ioa_data) - off; 3144 else 3145 len = count; 3146 src = (u8 *)&dump->ioa_dump + off; 3147 memcpy(buf, src, len); 3148 buf += len; 3149 off += len; 3150 count -= len; 3151 } 3152 3153 off -= offsetof(struct ipr_ioa_dump, ioa_data); 3154 3155 while (count) { 3156 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK)) 3157 len = PAGE_ALIGN(off) - off; 3158 else 3159 len = count; 3160 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT]; 3161 src += off & ~PAGE_MASK; 3162 memcpy(buf, src, len); 3163 buf += len; 3164 off += len; 3165 count -= len; 3166 } 3167 3168 kref_put(&dump->kref, ipr_release_dump); 3169 return rc; 3170 } 3171 3172 /** 3173 * ipr_alloc_dump - Prepare for adapter dump 3174 * @ioa_cfg: ioa config struct 3175 * 3176 * Return value: 3177 * 0 on success / other on failure 3178 **/ 3179 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg) 3180 { 3181 struct ipr_dump *dump; 3182 unsigned long lock_flags = 0; 3183 3184 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL); 3185 3186 if (!dump) { 3187 ipr_err("Dump memory allocation failed\n"); 3188 return -ENOMEM; 3189 } 3190 3191 kref_init(&dump->kref); 3192 dump->ioa_cfg = ioa_cfg; 3193 3194 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3195 3196 if (INACTIVE != ioa_cfg->sdt_state) { 3197 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3198 kfree(dump); 3199 return 0; 3200 } 3201 3202 ioa_cfg->dump = dump; 3203 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 3204 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) { 3205 ioa_cfg->dump_taken = 1; 3206 schedule_work(&ioa_cfg->work_q); 3207 } 3208 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3209 3210 return 0; 3211 } 3212 3213 /** 3214 * ipr_free_dump - Free adapter dump memory 3215 * @ioa_cfg: ioa config struct 3216 * 3217 * Return value: 3218 * 0 on success / other on failure 3219 **/ 3220 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) 3221 { 3222 struct ipr_dump *dump; 3223 unsigned long lock_flags = 0; 3224 3225 ENTER; 3226 3227 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3228 dump = ioa_cfg->dump; 3229 if (!dump) { 3230 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3231 return 0; 3232 } 3233 3234 ioa_cfg->dump = NULL; 3235 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3236 3237 kref_put(&dump->kref, ipr_release_dump); 3238 3239 LEAVE; 3240 return 0; 3241 } 3242 3243 /** 3244 * ipr_write_dump - Setup dump state of adapter 3245 * @kobj: kobject struct 3246 * @buf: buffer 3247 * @off: offset 3248 * @count: buffer size 3249 * 3250 * Return value: 3251 * number of bytes printed to buffer 3252 **/ 3253 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf, 3254 loff_t off, size_t count) 3255 { 3256 struct class_device *cdev = container_of(kobj,struct class_device,kobj); 3257 struct Scsi_Host *shost = class_to_shost(cdev); 3258 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata; 3259 int rc; 3260 3261 if (!capable(CAP_SYS_ADMIN)) 3262 return -EACCES; 3263 3264 if (buf[0] == '1') 3265 rc = ipr_alloc_dump(ioa_cfg); 3266 else if (buf[0] == '0') 3267 rc = ipr_free_dump(ioa_cfg); 3268 else 3269 return -EINVAL; 3270 3271 if (rc) 3272 return rc; 3273 else 3274 return count; 3275 } 3276 3277 static struct bin_attribute ipr_dump_attr = { 3278 .attr = { 3279 .name = "dump", 3280 .mode = S_IRUSR | S_IWUSR, 3281 }, 3282 .size = 0, 3283 .read = ipr_read_dump, 3284 .write = ipr_write_dump 3285 }; 3286 #else 3287 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; 3288 #endif 3289 3290 /** 3291 * ipr_change_queue_depth - Change the device's queue depth 3292 * @sdev: scsi device struct 3293 * @qdepth: depth to set 3294 * 3295 * Return value: 3296 * actual depth set 3297 **/ 3298 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) 3299 { 3300 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3301 struct ipr_resource_entry *res; 3302 unsigned long lock_flags = 0; 3303 3304 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3305 res = (struct ipr_resource_entry *)sdev->hostdata; 3306 3307 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) 3308 qdepth = IPR_MAX_CMD_PER_ATA_LUN; 3309 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3310 3311 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 3312 return sdev->queue_depth; 3313 } 3314 3315 /** 3316 * ipr_change_queue_type - Change the device's queue type 3317 * @dsev: scsi device struct 3318 * @tag_type: type of tags to use 3319 * 3320 * Return value: 3321 * actual queue type set 3322 **/ 3323 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type) 3324 { 3325 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3326 struct ipr_resource_entry *res; 3327 unsigned long lock_flags = 0; 3328 3329 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3330 res = (struct ipr_resource_entry *)sdev->hostdata; 3331 3332 if (res) { 3333 if (ipr_is_gscsi(res) && sdev->tagged_supported) { 3334 /* 3335 * We don't bother quiescing the device here since the 3336 * adapter firmware does it for us. 3337 */ 3338 scsi_set_tag_type(sdev, tag_type); 3339 3340 if (tag_type) 3341 scsi_activate_tcq(sdev, sdev->queue_depth); 3342 else 3343 scsi_deactivate_tcq(sdev, sdev->queue_depth); 3344 } else 3345 tag_type = 0; 3346 } else 3347 tag_type = 0; 3348 3349 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3350 return tag_type; 3351 } 3352 3353 /** 3354 * ipr_show_adapter_handle - Show the adapter's resource handle for this device 3355 * @dev: device struct 3356 * @buf: buffer 3357 * 3358 * Return value: 3359 * number of bytes printed to buffer 3360 **/ 3361 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf) 3362 { 3363 struct scsi_device *sdev = to_scsi_device(dev); 3364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; 3365 struct ipr_resource_entry *res; 3366 unsigned long lock_flags = 0; 3367 ssize_t len = -ENXIO; 3368 3369 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3370 res = (struct ipr_resource_entry *)sdev->hostdata; 3371 if (res) 3372 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle); 3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3374 return len; 3375 } 3376 3377 static struct device_attribute ipr_adapter_handle_attr = { 3378 .attr = { 3379 .name = "adapter_handle", 3380 .mode = S_IRUSR, 3381 }, 3382 .show = ipr_show_adapter_handle 3383 }; 3384 3385 static struct device_attribute *ipr_dev_attrs[] = { 3386 &ipr_adapter_handle_attr, 3387 NULL, 3388 }; 3389 3390 /** 3391 * ipr_biosparam - Return the HSC mapping 3392 * @sdev: scsi device struct 3393 * @block_device: block device pointer 3394 * @capacity: capacity of the device 3395 * @parm: Array containing returned HSC values. 3396 * 3397 * This function generates the HSC parms that fdisk uses. 3398 * We want to make sure we return something that places partitions 3399 * on 4k boundaries for best performance with the IOA. 3400 * 3401 * Return value: 3402 * 0 on success 3403 **/ 3404 static int ipr_biosparam(struct scsi_device *sdev, 3405 struct block_device *block_device, 3406 sector_t capacity, int *parm) 3407 { 3408 int heads, sectors; 3409 sector_t cylinders; 3410 3411 heads = 128; 3412 sectors = 32; 3413 3414 cylinders = capacity; 3415 sector_div(cylinders, (128 * 32)); 3416 3417 /* return result */ 3418 parm[0] = heads; 3419 parm[1] = sectors; 3420 parm[2] = cylinders; 3421 3422 return 0; 3423 } 3424 3425 /** 3426 * ipr_find_starget - Find target based on bus/target. 3427 * @starget: scsi target struct 3428 * 3429 * Return value: 3430 * resource entry pointer if found / NULL if not found 3431 **/ 3432 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) 3433 { 3434 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3435 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3436 struct ipr_resource_entry *res; 3437 3438 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3439 if ((res->cfgte.res_addr.bus == starget->channel) && 3440 (res->cfgte.res_addr.target == starget->id) && 3441 (res->cfgte.res_addr.lun == 0)) { 3442 return res; 3443 } 3444 } 3445 3446 return NULL; 3447 } 3448 3449 static struct ata_port_info sata_port_info; 3450 3451 /** 3452 * ipr_target_alloc - Prepare for commands to a SCSI target 3453 * @starget: scsi target struct 3454 * 3455 * If the device is a SATA device, this function allocates an 3456 * ATA port with libata, else it does nothing. 3457 * 3458 * Return value: 3459 * 0 on success / non-0 on failure 3460 **/ 3461 static int ipr_target_alloc(struct scsi_target *starget) 3462 { 3463 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3464 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; 3465 struct ipr_sata_port *sata_port; 3466 struct ata_port *ap; 3467 struct ipr_resource_entry *res; 3468 unsigned long lock_flags; 3469 3470 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3471 res = ipr_find_starget(starget); 3472 starget->hostdata = NULL; 3473 3474 if (res && ipr_is_gata(res)) { 3475 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3476 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); 3477 if (!sata_port) 3478 return -ENOMEM; 3479 3480 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); 3481 if (ap) { 3482 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3483 sata_port->ioa_cfg = ioa_cfg; 3484 sata_port->ap = ap; 3485 sata_port->res = res; 3486 3487 res->sata_port = sata_port; 3488 ap->private_data = sata_port; 3489 starget->hostdata = sata_port; 3490 } else { 3491 kfree(sata_port); 3492 return -ENOMEM; 3493 } 3494 } 3495 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3496 3497 return 0; 3498 } 3499 3500 /** 3501 * ipr_target_destroy - Destroy a SCSI target 3502 * @starget: scsi target struct 3503 * 3504 * If the device was a SATA device, this function frees the libata 3505 * ATA port, else it does nothing. 3506 * 3507 **/ 3508 static void ipr_target_destroy(struct scsi_target *starget) 3509 { 3510 struct ipr_sata_port *sata_port = starget->hostdata; 3511 3512 if (sata_port) { 3513 starget->hostdata = NULL; 3514 ata_sas_port_destroy(sata_port->ap); 3515 kfree(sata_port); 3516 } 3517 } 3518 3519 /** 3520 * ipr_find_sdev - Find device based on bus/target/lun. 3521 * @sdev: scsi device struct 3522 * 3523 * Return value: 3524 * resource entry pointer if found / NULL if not found 3525 **/ 3526 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) 3527 { 3528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3529 struct ipr_resource_entry *res; 3530 3531 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3532 if ((res->cfgte.res_addr.bus == sdev->channel) && 3533 (res->cfgte.res_addr.target == sdev->id) && 3534 (res->cfgte.res_addr.lun == sdev->lun)) 3535 return res; 3536 } 3537 3538 return NULL; 3539 } 3540 3541 /** 3542 * ipr_slave_destroy - Unconfigure a SCSI device 3543 * @sdev: scsi device struct 3544 * 3545 * Return value: 3546 * nothing 3547 **/ 3548 static void ipr_slave_destroy(struct scsi_device *sdev) 3549 { 3550 struct ipr_resource_entry *res; 3551 struct ipr_ioa_cfg *ioa_cfg; 3552 unsigned long lock_flags = 0; 3553 3554 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3555 3556 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3557 res = (struct ipr_resource_entry *) sdev->hostdata; 3558 if (res) { 3559 if (res->sata_port) 3560 ata_port_disable(res->sata_port->ap); 3561 sdev->hostdata = NULL; 3562 res->sdev = NULL; 3563 res->sata_port = NULL; 3564 } 3565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3566 } 3567 3568 /** 3569 * ipr_slave_configure - Configure a SCSI device 3570 * @sdev: scsi device struct 3571 * 3572 * This function configures the specified scsi device. 3573 * 3574 * Return value: 3575 * 0 on success 3576 **/ 3577 static int ipr_slave_configure(struct scsi_device *sdev) 3578 { 3579 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3580 struct ipr_resource_entry *res; 3581 unsigned long lock_flags = 0; 3582 3583 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3584 res = sdev->hostdata; 3585 if (res) { 3586 if (ipr_is_af_dasd_device(res)) 3587 sdev->type = TYPE_RAID; 3588 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) { 3589 sdev->scsi_level = 4; 3590 sdev->no_uld_attach = 1; 3591 } 3592 if (ipr_is_vset_device(res)) { 3593 sdev->timeout = IPR_VSET_RW_TIMEOUT; 3594 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); 3595 } 3596 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) 3597 sdev->allow_restart = 1; 3598 if (ipr_is_gata(res) && res->sata_port) { 3599 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); 3600 ata_sas_slave_configure(sdev, res->sata_port->ap); 3601 } else { 3602 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); 3603 } 3604 } 3605 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3606 return 0; 3607 } 3608 3609 /** 3610 * ipr_ata_slave_alloc - Prepare for commands to a SATA device 3611 * @sdev: scsi device struct 3612 * 3613 * This function initializes an ATA port so that future commands 3614 * sent through queuecommand will work. 3615 * 3616 * Return value: 3617 * 0 on success 3618 **/ 3619 static int ipr_ata_slave_alloc(struct scsi_device *sdev) 3620 { 3621 struct ipr_sata_port *sata_port = NULL; 3622 int rc = -ENXIO; 3623 3624 ENTER; 3625 if (sdev->sdev_target) 3626 sata_port = sdev->sdev_target->hostdata; 3627 if (sata_port) 3628 rc = ata_sas_port_init(sata_port->ap); 3629 if (rc) 3630 ipr_slave_destroy(sdev); 3631 3632 LEAVE; 3633 return rc; 3634 } 3635 3636 /** 3637 * ipr_slave_alloc - Prepare for commands to a device. 3638 * @sdev: scsi device struct 3639 * 3640 * This function saves a pointer to the resource entry 3641 * in the scsi device struct if the device exists. We 3642 * can then use this pointer in ipr_queuecommand when 3643 * handling new commands. 3644 * 3645 * Return value: 3646 * 0 on success / -ENXIO if device does not exist 3647 **/ 3648 static int ipr_slave_alloc(struct scsi_device *sdev) 3649 { 3650 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; 3651 struct ipr_resource_entry *res; 3652 unsigned long lock_flags; 3653 int rc = -ENXIO; 3654 3655 sdev->hostdata = NULL; 3656 3657 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3658 3659 res = ipr_find_sdev(sdev); 3660 if (res) { 3661 res->sdev = sdev; 3662 res->add_to_ml = 0; 3663 res->in_erp = 0; 3664 sdev->hostdata = res; 3665 if (!ipr_is_naca_model(res)) 3666 res->needs_sync_complete = 1; 3667 rc = 0; 3668 if (ipr_is_gata(res)) { 3669 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3670 return ipr_ata_slave_alloc(sdev); 3671 } 3672 } 3673 3674 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3675 3676 return rc; 3677 } 3678 3679 /** 3680 * ipr_eh_host_reset - Reset the host adapter 3681 * @scsi_cmd: scsi command struct 3682 * 3683 * Return value: 3684 * SUCCESS / FAILED 3685 **/ 3686 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd) 3687 { 3688 struct ipr_ioa_cfg *ioa_cfg; 3689 int rc; 3690 3691 ENTER; 3692 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3693 3694 dev_err(&ioa_cfg->pdev->dev, 3695 "Adapter being reset as a result of error recovery.\n"); 3696 3697 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 3698 ioa_cfg->sdt_state = GET_DUMP; 3699 3700 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV); 3701 3702 LEAVE; 3703 return rc; 3704 } 3705 3706 static int ipr_eh_host_reset(struct scsi_cmnd * cmd) 3707 { 3708 int rc; 3709 3710 spin_lock_irq(cmd->device->host->host_lock); 3711 rc = __ipr_eh_host_reset(cmd); 3712 spin_unlock_irq(cmd->device->host->host_lock); 3713 3714 return rc; 3715 } 3716 3717 /** 3718 * ipr_device_reset - Reset the device 3719 * @ioa_cfg: ioa config struct 3720 * @res: resource entry struct 3721 * 3722 * This function issues a device reset to the affected device. 3723 * If the device is a SCSI device, a LUN reset will be sent 3724 * to the device first. If that does not work, a target reset 3725 * will be sent. If the device is a SATA device, a PHY reset will 3726 * be sent. 3727 * 3728 * Return value: 3729 * 0 on success / non-zero on failure 3730 **/ 3731 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, 3732 struct ipr_resource_entry *res) 3733 { 3734 struct ipr_cmnd *ipr_cmd; 3735 struct ipr_ioarcb *ioarcb; 3736 struct ipr_cmd_pkt *cmd_pkt; 3737 struct ipr_ioarcb_ata_regs *regs; 3738 u32 ioasc; 3739 3740 ENTER; 3741 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3742 ioarcb = &ipr_cmd->ioarcb; 3743 cmd_pkt = &ioarcb->cmd_pkt; 3744 regs = &ioarcb->add_data.u.regs; 3745 3746 ioarcb->res_handle = res->cfgte.res_handle; 3747 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3748 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3749 if (ipr_is_gata(res)) { 3750 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; 3751 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags)); 3752 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 3753 } 3754 3755 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3756 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 3757 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3758 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) 3759 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 3760 sizeof(struct ipr_ioasa_gata)); 3761 3762 LEAVE; 3763 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); 3764 } 3765 3766 /** 3767 * ipr_sata_reset - Reset the SATA port 3768 * @ap: SATA port to reset 3769 * @classes: class of the attached device 3770 * 3771 * This function issues a SATA phy reset to the affected ATA port. 3772 * 3773 * Return value: 3774 * 0 on success / non-zero on failure 3775 **/ 3776 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes, 3777 unsigned long deadline) 3778 { 3779 struct ipr_sata_port *sata_port = ap->private_data; 3780 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 3781 struct ipr_resource_entry *res; 3782 unsigned long lock_flags = 0; 3783 int rc = -ENXIO; 3784 3785 ENTER; 3786 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3787 while(ioa_cfg->in_reset_reload) { 3788 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3789 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 3790 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3791 } 3792 3793 res = sata_port->res; 3794 if (res) { 3795 rc = ipr_device_reset(ioa_cfg, res); 3796 switch(res->cfgte.proto) { 3797 case IPR_PROTO_SATA: 3798 case IPR_PROTO_SAS_STP: 3799 *classes = ATA_DEV_ATA; 3800 break; 3801 case IPR_PROTO_SATA_ATAPI: 3802 case IPR_PROTO_SAS_STP_ATAPI: 3803 *classes = ATA_DEV_ATAPI; 3804 break; 3805 default: 3806 *classes = ATA_DEV_UNKNOWN; 3807 break; 3808 }; 3809 } 3810 3811 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3812 LEAVE; 3813 return rc; 3814 } 3815 3816 /** 3817 * ipr_eh_dev_reset - Reset the device 3818 * @scsi_cmd: scsi command struct 3819 * 3820 * This function issues a device reset to the affected device. 3821 * A LUN reset will be sent to the device first. If that does 3822 * not work, a target reset will be sent. 3823 * 3824 * Return value: 3825 * SUCCESS / FAILED 3826 **/ 3827 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) 3828 { 3829 struct ipr_cmnd *ipr_cmd; 3830 struct ipr_ioa_cfg *ioa_cfg; 3831 struct ipr_resource_entry *res; 3832 struct ata_port *ap; 3833 int rc = 0; 3834 3835 ENTER; 3836 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; 3837 res = scsi_cmd->device->hostdata; 3838 3839 if (!res) 3840 return FAILED; 3841 3842 /* 3843 * If we are currently going through reset/reload, return failed. This will force the 3844 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the 3845 * reset to complete 3846 */ 3847 if (ioa_cfg->in_reset_reload) 3848 return FAILED; 3849 if (ioa_cfg->ioa_is_dead) 3850 return FAILED; 3851 3852 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 3853 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) { 3854 if (ipr_cmd->scsi_cmd) 3855 ipr_cmd->done = ipr_scsi_eh_done; 3856 if (ipr_cmd->qc) 3857 ipr_cmd->done = ipr_sata_eh_done; 3858 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) { 3859 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; 3860 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; 3861 } 3862 } 3863 } 3864 3865 res->resetting_device = 1; 3866 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); 3867 3868 if (ipr_is_gata(res) && res->sata_port) { 3869 ap = res->sata_port->ap; 3870 spin_unlock_irq(scsi_cmd->device->host->host_lock); 3871 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL); 3872 spin_lock_irq(scsi_cmd->device->host->host_lock); 3873 } else 3874 rc = ipr_device_reset(ioa_cfg, res); 3875 res->resetting_device = 0; 3876 3877 LEAVE; 3878 return (rc ? FAILED : SUCCESS); 3879 } 3880 3881 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd) 3882 { 3883 int rc; 3884 3885 spin_lock_irq(cmd->device->host->host_lock); 3886 rc = __ipr_eh_dev_reset(cmd); 3887 spin_unlock_irq(cmd->device->host->host_lock); 3888 3889 return rc; 3890 } 3891 3892 /** 3893 * ipr_bus_reset_done - Op done function for bus reset. 3894 * @ipr_cmd: ipr command struct 3895 * 3896 * This function is the op done function for a bus reset 3897 * 3898 * Return value: 3899 * none 3900 **/ 3901 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd) 3902 { 3903 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3904 struct ipr_resource_entry *res; 3905 3906 ENTER; 3907 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 3908 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle, 3909 sizeof(res->cfgte.res_handle))) { 3910 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus); 3911 break; 3912 } 3913 } 3914 3915 /* 3916 * If abort has not completed, indicate the reset has, else call the 3917 * abort's done function to wake the sleeping eh thread 3918 */ 3919 if (ipr_cmd->sibling->sibling) 3920 ipr_cmd->sibling->sibling = NULL; 3921 else 3922 ipr_cmd->sibling->done(ipr_cmd->sibling); 3923 3924 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 3925 LEAVE; 3926 } 3927 3928 /** 3929 * ipr_abort_timeout - An abort task has timed out 3930 * @ipr_cmd: ipr command struct 3931 * 3932 * This function handles when an abort task times out. If this 3933 * happens we issue a bus reset since we have resources tied 3934 * up that must be freed before returning to the midlayer. 3935 * 3936 * Return value: 3937 * none 3938 **/ 3939 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd) 3940 { 3941 struct ipr_cmnd *reset_cmd; 3942 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 3943 struct ipr_cmd_pkt *cmd_pkt; 3944 unsigned long lock_flags = 0; 3945 3946 ENTER; 3947 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 3948 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) { 3949 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3950 return; 3951 } 3952 3953 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n"); 3954 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 3955 ipr_cmd->sibling = reset_cmd; 3956 reset_cmd->sibling = ipr_cmd; 3957 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle; 3958 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt; 3959 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 3960 cmd_pkt->cdb[0] = IPR_RESET_DEVICE; 3961 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET; 3962 3963 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); 3964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 3965 LEAVE; 3966 } 3967 3968 /** 3969 * ipr_cancel_op - Cancel specified op 3970 * @scsi_cmd: scsi command struct 3971 * 3972 * This function cancels specified op. 3973 * 3974 * Return value: 3975 * SUCCESS / FAILED 3976 **/ 3977 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd) 3978 { 3979 struct ipr_cmnd *ipr_cmd; 3980 struct ipr_ioa_cfg *ioa_cfg; 3981 struct ipr_resource_entry *res; 3982 struct ipr_cmd_pkt *cmd_pkt; 3983 u32 ioasc; 3984 int op_found = 0; 3985 3986 ENTER; 3987 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 3988 res = scsi_cmd->device->hostdata; 3989 3990 /* If we are currently going through reset/reload, return failed. 3991 * This will force the mid-layer to call ipr_eh_host_reset, 3992 * which will then go to sleep and wait for the reset to complete 3993 */ 3994 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead) 3995 return FAILED; 3996 if (!res || !ipr_is_gscsi(res)) 3997 return FAILED; 3998 3999 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4000 if (ipr_cmd->scsi_cmd == scsi_cmd) { 4001 ipr_cmd->done = ipr_scsi_eh_done; 4002 op_found = 1; 4003 break; 4004 } 4005 } 4006 4007 if (!op_found) 4008 return SUCCESS; 4009 4010 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4011 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 4012 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4013 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4014 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4015 ipr_cmd->u.sdev = scsi_cmd->device; 4016 4017 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n", 4018 scsi_cmd->cmnd[0]); 4019 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT); 4020 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4021 4022 /* 4023 * If the abort task timed out and we sent a bus reset, we will get 4024 * one the following responses to the abort 4025 */ 4026 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) { 4027 ioasc = 0; 4028 ipr_trace; 4029 } 4030 4031 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4032 if (!ipr_is_naca_model(res)) 4033 res->needs_sync_complete = 1; 4034 4035 LEAVE; 4036 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS); 4037 } 4038 4039 /** 4040 * ipr_eh_abort - Abort a single op 4041 * @scsi_cmd: scsi command struct 4042 * 4043 * Return value: 4044 * SUCCESS / FAILED 4045 **/ 4046 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd) 4047 { 4048 unsigned long flags; 4049 int rc; 4050 4051 ENTER; 4052 4053 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); 4054 rc = ipr_cancel_op(scsi_cmd); 4055 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); 4056 4057 LEAVE; 4058 return rc; 4059 } 4060 4061 /** 4062 * ipr_handle_other_interrupt - Handle "other" interrupts 4063 * @ioa_cfg: ioa config struct 4064 * @int_reg: interrupt register 4065 * 4066 * Return value: 4067 * IRQ_NONE / IRQ_HANDLED 4068 **/ 4069 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, 4070 volatile u32 int_reg) 4071 { 4072 irqreturn_t rc = IRQ_HANDLED; 4073 4074 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 4075 /* Mask the interrupt */ 4076 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg); 4077 4078 /* Clear the interrupt */ 4079 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg); 4080 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 4081 4082 list_del(&ioa_cfg->reset_cmd->queue); 4083 del_timer(&ioa_cfg->reset_cmd->timer); 4084 ipr_reset_ioa_job(ioa_cfg->reset_cmd); 4085 } else { 4086 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED) 4087 ioa_cfg->ioa_unit_checked = 1; 4088 else 4089 dev_err(&ioa_cfg->pdev->dev, 4090 "Permanent IOA failure. 0x%08X\n", int_reg); 4091 4092 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4093 ioa_cfg->sdt_state = GET_DUMP; 4094 4095 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 4096 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4097 } 4098 4099 return rc; 4100 } 4101 4102 /** 4103 * ipr_isr - Interrupt service routine 4104 * @irq: irq number 4105 * @devp: pointer to ioa config struct 4106 * 4107 * Return value: 4108 * IRQ_NONE / IRQ_HANDLED 4109 **/ 4110 static irqreturn_t ipr_isr(int irq, void *devp) 4111 { 4112 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; 4113 unsigned long lock_flags = 0; 4114 volatile u32 int_reg, int_mask_reg; 4115 u32 ioasc; 4116 u16 cmd_index; 4117 struct ipr_cmnd *ipr_cmd; 4118 irqreturn_t rc = IRQ_NONE; 4119 4120 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 4121 4122 /* If interrupts are disabled, ignore the interrupt */ 4123 if (!ioa_cfg->allow_interrupts) { 4124 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4125 return IRQ_NONE; 4126 } 4127 4128 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 4129 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4130 4131 /* If an interrupt on the adapter did not occur, ignore it */ 4132 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) { 4133 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4134 return IRQ_NONE; 4135 } 4136 4137 while (1) { 4138 ipr_cmd = NULL; 4139 4140 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) == 4141 ioa_cfg->toggle_bit) { 4142 4143 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) & 4144 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT; 4145 4146 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) { 4147 ioa_cfg->errors_logged++; 4148 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n"); 4149 4150 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state) 4151 ioa_cfg->sdt_state = GET_DUMP; 4152 4153 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 4154 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4155 return IRQ_HANDLED; 4156 } 4157 4158 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index]; 4159 4160 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4161 4162 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc); 4163 4164 list_del(&ipr_cmd->queue); 4165 del_timer(&ipr_cmd->timer); 4166 ipr_cmd->done(ipr_cmd); 4167 4168 rc = IRQ_HANDLED; 4169 4170 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) { 4171 ioa_cfg->hrrq_curr++; 4172 } else { 4173 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 4174 ioa_cfg->toggle_bit ^= 1u; 4175 } 4176 } 4177 4178 if (ipr_cmd != NULL) { 4179 /* Clear the PCI interrupt */ 4180 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg); 4181 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg; 4182 } else 4183 break; 4184 } 4185 4186 if (unlikely(rc == IRQ_NONE)) 4187 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg); 4188 4189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 4190 return rc; 4191 } 4192 4193 /** 4194 * ipr_build_ioadl - Build a scatter/gather list and map the buffer 4195 * @ioa_cfg: ioa config struct 4196 * @ipr_cmd: ipr command struct 4197 * 4198 * Return value: 4199 * 0 on success / -1 on failure 4200 **/ 4201 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg, 4202 struct ipr_cmnd *ipr_cmd) 4203 { 4204 int i; 4205 struct scatterlist *sglist; 4206 u32 length; 4207 u32 ioadl_flags = 0; 4208 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4209 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4210 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 4211 4212 length = scsi_cmd->request_bufflen; 4213 4214 if (length == 0) 4215 return 0; 4216 4217 if (scsi_cmd->use_sg) { 4218 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, 4219 scsi_cmd->request_buffer, 4220 scsi_cmd->use_sg, 4221 scsi_cmd->sc_data_direction); 4222 4223 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4224 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4225 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4226 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4227 ioarcb->write_ioadl_len = 4228 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4229 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4230 ioadl_flags = IPR_IOADL_FLAGS_READ; 4231 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4232 ioarcb->read_ioadl_len = 4233 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 4234 } 4235 4236 sglist = scsi_cmd->request_buffer; 4237 4238 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) { 4239 ioadl = ioarcb->add_data.u.ioadl; 4240 ioarcb->write_ioadl_addr = 4241 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) + 4242 offsetof(struct ipr_ioarcb, add_data)); 4243 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 4244 } 4245 4246 for (i = 0; i < ipr_cmd->dma_use_sg; i++) { 4247 ioadl[i].flags_and_data_len = 4248 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i])); 4249 ioadl[i].address = 4250 cpu_to_be32(sg_dma_address(&sglist[i])); 4251 } 4252 4253 if (likely(ipr_cmd->dma_use_sg)) { 4254 ioadl[i-1].flags_and_data_len |= 4255 cpu_to_be32(IPR_IOADL_FLAGS_LAST); 4256 return 0; 4257 } else 4258 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n"); 4259 } else { 4260 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) { 4261 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 4262 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 4263 ioarcb->write_data_transfer_length = cpu_to_be32(length); 4264 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4265 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) { 4266 ioadl_flags = IPR_IOADL_FLAGS_READ; 4267 ioarcb->read_data_transfer_length = cpu_to_be32(length); 4268 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4269 } 4270 4271 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev, 4272 scsi_cmd->request_buffer, length, 4273 scsi_cmd->sc_data_direction); 4274 4275 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) { 4276 ioadl = ioarcb->add_data.u.ioadl; 4277 ioarcb->write_ioadl_addr = 4278 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) + 4279 offsetof(struct ipr_ioarcb, add_data)); 4280 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 4281 ipr_cmd->dma_use_sg = 1; 4282 ioadl[0].flags_and_data_len = 4283 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST); 4284 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle); 4285 return 0; 4286 } else 4287 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n"); 4288 } 4289 4290 return -1; 4291 } 4292 4293 /** 4294 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes 4295 * @scsi_cmd: scsi command struct 4296 * 4297 * Return value: 4298 * task attributes 4299 **/ 4300 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd) 4301 { 4302 u8 tag[2]; 4303 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK; 4304 4305 if (scsi_populate_tag_msg(scsi_cmd, tag)) { 4306 switch (tag[0]) { 4307 case MSG_SIMPLE_TAG: 4308 rc = IPR_FLAGS_LO_SIMPLE_TASK; 4309 break; 4310 case MSG_HEAD_TAG: 4311 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK; 4312 break; 4313 case MSG_ORDERED_TAG: 4314 rc = IPR_FLAGS_LO_ORDERED_TASK; 4315 break; 4316 }; 4317 } 4318 4319 return rc; 4320 } 4321 4322 /** 4323 * ipr_erp_done - Process completion of ERP for a device 4324 * @ipr_cmd: ipr command struct 4325 * 4326 * This function copies the sense buffer into the scsi_cmd 4327 * struct and pushes the scsi_done function. 4328 * 4329 * Return value: 4330 * nothing 4331 **/ 4332 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd) 4333 { 4334 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4335 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4336 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4337 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4338 4339 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4340 scsi_cmd->result |= (DID_ERROR << 16); 4341 scmd_printk(KERN_ERR, scsi_cmd, 4342 "Request Sense failed with IOASC: 0x%08X\n", ioasc); 4343 } else { 4344 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer, 4345 SCSI_SENSE_BUFFERSIZE); 4346 } 4347 4348 if (res) { 4349 if (!ipr_is_naca_model(res)) 4350 res->needs_sync_complete = 1; 4351 res->in_erp = 0; 4352 } 4353 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4354 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4355 scsi_cmd->scsi_done(scsi_cmd); 4356 } 4357 4358 /** 4359 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP 4360 * @ipr_cmd: ipr command struct 4361 * 4362 * Return value: 4363 * none 4364 **/ 4365 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd) 4366 { 4367 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 4368 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4369 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr); 4370 4371 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt)); 4372 ioarcb->write_data_transfer_length = 0; 4373 ioarcb->read_data_transfer_length = 0; 4374 ioarcb->write_ioadl_len = 0; 4375 ioarcb->read_ioadl_len = 0; 4376 ioasa->ioasc = 0; 4377 ioasa->residual_data_len = 0; 4378 ioarcb->write_ioadl_addr = 4379 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 4380 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 4381 } 4382 4383 /** 4384 * ipr_erp_request_sense - Send request sense to a device 4385 * @ipr_cmd: ipr command struct 4386 * 4387 * This function sends a request sense to a device as a result 4388 * of a check condition. 4389 * 4390 * Return value: 4391 * nothing 4392 **/ 4393 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd) 4394 { 4395 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4396 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4397 4398 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) { 4399 ipr_erp_done(ipr_cmd); 4400 return; 4401 } 4402 4403 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4404 4405 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB; 4406 cmd_pkt->cdb[0] = REQUEST_SENSE; 4407 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE; 4408 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE; 4409 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4410 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ); 4411 4412 ipr_cmd->ioadl[0].flags_and_data_len = 4413 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE); 4414 ipr_cmd->ioadl[0].address = 4415 cpu_to_be32(ipr_cmd->sense_buffer_dma); 4416 4417 ipr_cmd->ioarcb.read_ioadl_len = 4418 cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 4419 ipr_cmd->ioarcb.read_data_transfer_length = 4420 cpu_to_be32(SCSI_SENSE_BUFFERSIZE); 4421 4422 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout, 4423 IPR_REQUEST_SENSE_TIMEOUT * 2); 4424 } 4425 4426 /** 4427 * ipr_erp_cancel_all - Send cancel all to a device 4428 * @ipr_cmd: ipr command struct 4429 * 4430 * This function sends a cancel all to a device to clear the 4431 * queue. If we are running TCQ on the device, QERR is set to 1, 4432 * which means all outstanding ops have been dropped on the floor. 4433 * Cancel all will return them to us. 4434 * 4435 * Return value: 4436 * nothing 4437 **/ 4438 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd) 4439 { 4440 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4441 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4442 struct ipr_cmd_pkt *cmd_pkt; 4443 4444 res->in_erp = 1; 4445 4446 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd); 4447 4448 if (!scsi_get_tag_type(scsi_cmd->device)) { 4449 ipr_erp_request_sense(ipr_cmd); 4450 return; 4451 } 4452 4453 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt; 4454 cmd_pkt->request_type = IPR_RQTYPE_IOACMD; 4455 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS; 4456 4457 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout, 4458 IPR_CANCEL_ALL_TIMEOUT); 4459 } 4460 4461 /** 4462 * ipr_dump_ioasa - Dump contents of IOASA 4463 * @ioa_cfg: ioa config struct 4464 * @ipr_cmd: ipr command struct 4465 * @res: resource entry struct 4466 * 4467 * This function is invoked by the interrupt handler when ops 4468 * fail. It will log the IOASA if appropriate. Only called 4469 * for GPDD ops. 4470 * 4471 * Return value: 4472 * none 4473 **/ 4474 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg, 4475 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res) 4476 { 4477 int i; 4478 u16 data_len; 4479 u32 ioasc, fd_ioasc; 4480 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4481 __be32 *ioasa_data = (__be32 *)ioasa; 4482 int error_index; 4483 4484 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK; 4485 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK; 4486 4487 if (0 == ioasc) 4488 return; 4489 4490 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL) 4491 return; 4492 4493 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc) 4494 error_index = ipr_get_error(fd_ioasc); 4495 else 4496 error_index = ipr_get_error(ioasc); 4497 4498 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) { 4499 /* Don't log an error if the IOA already logged one */ 4500 if (ioasa->ilid != 0) 4501 return; 4502 4503 if (!ipr_is_gscsi(res)) 4504 return; 4505 4506 if (ipr_error_table[error_index].log_ioasa == 0) 4507 return; 4508 } 4509 4510 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error); 4511 4512 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len)) 4513 data_len = sizeof(struct ipr_ioasa); 4514 else 4515 data_len = be16_to_cpu(ioasa->ret_stat_len); 4516 4517 ipr_err("IOASA Dump:\n"); 4518 4519 for (i = 0; i < data_len / 4; i += 4) { 4520 ipr_err("%08X: %08X %08X %08X %08X\n", i*4, 4521 be32_to_cpu(ioasa_data[i]), 4522 be32_to_cpu(ioasa_data[i+1]), 4523 be32_to_cpu(ioasa_data[i+2]), 4524 be32_to_cpu(ioasa_data[i+3])); 4525 } 4526 } 4527 4528 /** 4529 * ipr_gen_sense - Generate SCSI sense data from an IOASA 4530 * @ioasa: IOASA 4531 * @sense_buf: sense data buffer 4532 * 4533 * Return value: 4534 * none 4535 **/ 4536 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd) 4537 { 4538 u32 failing_lba; 4539 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer; 4540 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata; 4541 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4542 u32 ioasc = be32_to_cpu(ioasa->ioasc); 4543 4544 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); 4545 4546 if (ioasc >= IPR_FIRST_DRIVER_IOASC) 4547 return; 4548 4549 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; 4550 4551 if (ipr_is_vset_device(res) && 4552 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC && 4553 ioasa->u.vset.failing_lba_hi != 0) { 4554 sense_buf[0] = 0x72; 4555 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc); 4556 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc); 4557 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc); 4558 4559 sense_buf[7] = 12; 4560 sense_buf[8] = 0; 4561 sense_buf[9] = 0x0A; 4562 sense_buf[10] = 0x80; 4563 4564 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi); 4565 4566 sense_buf[12] = (failing_lba & 0xff000000) >> 24; 4567 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; 4568 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; 4569 sense_buf[15] = failing_lba & 0x000000ff; 4570 4571 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4572 4573 sense_buf[16] = (failing_lba & 0xff000000) >> 24; 4574 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; 4575 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; 4576 sense_buf[19] = failing_lba & 0x000000ff; 4577 } else { 4578 sense_buf[0] = 0x70; 4579 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc); 4580 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc); 4581 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc); 4582 4583 /* Illegal request */ 4584 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) && 4585 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) { 4586 sense_buf[7] = 10; /* additional length */ 4587 4588 /* IOARCB was in error */ 4589 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24) 4590 sense_buf[15] = 0xC0; 4591 else /* Parameter data was invalid */ 4592 sense_buf[15] = 0x80; 4593 4594 sense_buf[16] = 4595 ((IPR_FIELD_POINTER_MASK & 4596 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff; 4597 sense_buf[17] = 4598 (IPR_FIELD_POINTER_MASK & 4599 be32_to_cpu(ioasa->ioasc_specific)) & 0xff; 4600 } else { 4601 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) { 4602 if (ipr_is_vset_device(res)) 4603 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo); 4604 else 4605 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba); 4606 4607 sense_buf[0] |= 0x80; /* Or in the Valid bit */ 4608 sense_buf[3] = (failing_lba & 0xff000000) >> 24; 4609 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16; 4610 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8; 4611 sense_buf[6] = failing_lba & 0x000000ff; 4612 } 4613 4614 sense_buf[7] = 6; /* additional length */ 4615 } 4616 } 4617 } 4618 4619 /** 4620 * ipr_get_autosense - Copy autosense data to sense buffer 4621 * @ipr_cmd: ipr command struct 4622 * 4623 * This function copies the autosense buffer to the buffer 4624 * in the scsi_cmd, if there is autosense available. 4625 * 4626 * Return value: 4627 * 1 if autosense was available / 0 if not 4628 **/ 4629 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd) 4630 { 4631 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa; 4632 4633 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0) 4634 return 0; 4635 4636 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data, 4637 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len), 4638 SCSI_SENSE_BUFFERSIZE)); 4639 return 1; 4640 } 4641 4642 /** 4643 * ipr_erp_start - Process an error response for a SCSI op 4644 * @ioa_cfg: ioa config struct 4645 * @ipr_cmd: ipr command struct 4646 * 4647 * This function determines whether or not to initiate ERP 4648 * on the affected device. 4649 * 4650 * Return value: 4651 * nothing 4652 **/ 4653 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg, 4654 struct ipr_cmnd *ipr_cmd) 4655 { 4656 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4657 struct ipr_resource_entry *res = scsi_cmd->device->hostdata; 4658 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4659 4660 if (!res) { 4661 ipr_scsi_eh_done(ipr_cmd); 4662 return; 4663 } 4664 4665 if (!ipr_is_gscsi(res)) 4666 ipr_gen_sense(ipr_cmd); 4667 4668 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 4669 4670 switch (ioasc & IPR_IOASC_IOASC_MASK) { 4671 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST: 4672 if (ipr_is_naca_model(res)) 4673 scsi_cmd->result |= (DID_ABORT << 16); 4674 else 4675 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4676 break; 4677 case IPR_IOASC_IR_RESOURCE_HANDLE: 4678 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA: 4679 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4680 break; 4681 case IPR_IOASC_HW_SEL_TIMEOUT: 4682 scsi_cmd->result |= (DID_NO_CONNECT << 16); 4683 if (!ipr_is_naca_model(res)) 4684 res->needs_sync_complete = 1; 4685 break; 4686 case IPR_IOASC_SYNC_REQUIRED: 4687 if (!res->in_erp) 4688 res->needs_sync_complete = 1; 4689 scsi_cmd->result |= (DID_IMM_RETRY << 16); 4690 break; 4691 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */ 4692 case IPR_IOASA_IR_DUAL_IOA_DISABLED: 4693 scsi_cmd->result |= (DID_PASSTHROUGH << 16); 4694 break; 4695 case IPR_IOASC_BUS_WAS_RESET: 4696 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER: 4697 /* 4698 * Report the bus reset and ask for a retry. The device 4699 * will give CC/UA the next command. 4700 */ 4701 if (!res->resetting_device) 4702 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel); 4703 scsi_cmd->result |= (DID_ERROR << 16); 4704 if (!ipr_is_naca_model(res)) 4705 res->needs_sync_complete = 1; 4706 break; 4707 case IPR_IOASC_HW_DEV_BUS_STATUS: 4708 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc); 4709 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) { 4710 if (!ipr_get_autosense(ipr_cmd)) { 4711 if (!ipr_is_naca_model(res)) { 4712 ipr_erp_cancel_all(ipr_cmd); 4713 return; 4714 } 4715 } 4716 } 4717 if (!ipr_is_naca_model(res)) 4718 res->needs_sync_complete = 1; 4719 break; 4720 case IPR_IOASC_NR_INIT_CMD_REQUIRED: 4721 break; 4722 default: 4723 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 4724 scsi_cmd->result |= (DID_ERROR << 16); 4725 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res)) 4726 res->needs_sync_complete = 1; 4727 break; 4728 } 4729 4730 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4731 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4732 scsi_cmd->scsi_done(scsi_cmd); 4733 } 4734 4735 /** 4736 * ipr_scsi_done - mid-layer done function 4737 * @ipr_cmd: ipr command struct 4738 * 4739 * This function is invoked by the interrupt handler for 4740 * ops generated by the SCSI mid-layer 4741 * 4742 * Return value: 4743 * none 4744 **/ 4745 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd) 4746 { 4747 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 4748 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd; 4749 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 4750 4751 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len); 4752 4753 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) { 4754 ipr_unmap_sglist(ioa_cfg, ipr_cmd); 4755 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4756 scsi_cmd->scsi_done(scsi_cmd); 4757 } else 4758 ipr_erp_start(ioa_cfg, ipr_cmd); 4759 } 4760 4761 /** 4762 * ipr_queuecommand - Queue a mid-layer request 4763 * @scsi_cmd: scsi command struct 4764 * @done: done function 4765 * 4766 * This function queues a request generated by the mid-layer. 4767 * 4768 * Return value: 4769 * 0 on success 4770 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy 4771 * SCSI_MLQUEUE_HOST_BUSY if host is busy 4772 **/ 4773 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, 4774 void (*done) (struct scsi_cmnd *)) 4775 { 4776 struct ipr_ioa_cfg *ioa_cfg; 4777 struct ipr_resource_entry *res; 4778 struct ipr_ioarcb *ioarcb; 4779 struct ipr_cmnd *ipr_cmd; 4780 int rc = 0; 4781 4782 scsi_cmd->scsi_done = done; 4783 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; 4784 res = scsi_cmd->device->hostdata; 4785 scsi_cmd->result = (DID_OK << 16); 4786 4787 /* 4788 * We are currently blocking all devices due to a host reset 4789 * We have told the host to stop giving us new requests, but 4790 * ERP ops don't count. FIXME 4791 */ 4792 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead)) 4793 return SCSI_MLQUEUE_HOST_BUSY; 4794 4795 /* 4796 * FIXME - Create scsi_set_host_offline interface 4797 * and the ioa_is_dead check can be removed 4798 */ 4799 if (unlikely(ioa_cfg->ioa_is_dead || !res)) { 4800 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 4801 scsi_cmd->result = (DID_NO_CONNECT << 16); 4802 scsi_cmd->scsi_done(scsi_cmd); 4803 return 0; 4804 } 4805 4806 if (ipr_is_gata(res) && res->sata_port) 4807 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); 4808 4809 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 4810 ioarcb = &ipr_cmd->ioarcb; 4811 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 4812 4813 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); 4814 ipr_cmd->scsi_cmd = scsi_cmd; 4815 ioarcb->res_handle = res->cfgte.res_handle; 4816 ipr_cmd->done = ipr_scsi_done; 4817 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 4818 4819 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) { 4820 if (scsi_cmd->underflow == 0) 4821 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 4822 4823 if (res->needs_sync_complete) { 4824 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE; 4825 res->needs_sync_complete = 0; 4826 } 4827 4828 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 4829 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; 4830 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; 4831 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); 4832 } 4833 4834 if (scsi_cmd->cmnd[0] >= 0xC0 && 4835 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) 4836 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 4837 4838 if (likely(rc == 0)) 4839 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd); 4840 4841 if (likely(rc == 0)) { 4842 mb(); 4843 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr), 4844 ioa_cfg->regs.ioarrin_reg); 4845 } else { 4846 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 4847 return SCSI_MLQUEUE_HOST_BUSY; 4848 } 4849 4850 return 0; 4851 } 4852 4853 /** 4854 * ipr_ioctl - IOCTL handler 4855 * @sdev: scsi device struct 4856 * @cmd: IOCTL cmd 4857 * @arg: IOCTL arg 4858 * 4859 * Return value: 4860 * 0 on success / other on failure 4861 **/ 4862 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 4863 { 4864 struct ipr_resource_entry *res; 4865 4866 res = (struct ipr_resource_entry *)sdev->hostdata; 4867 if (res && ipr_is_gata(res)) 4868 return ata_scsi_ioctl(sdev, cmd, arg); 4869 4870 return -EINVAL; 4871 } 4872 4873 /** 4874 * ipr_info - Get information about the card/driver 4875 * @scsi_host: scsi host struct 4876 * 4877 * Return value: 4878 * pointer to buffer with description string 4879 **/ 4880 static const char * ipr_ioa_info(struct Scsi_Host *host) 4881 { 4882 static char buffer[512]; 4883 struct ipr_ioa_cfg *ioa_cfg; 4884 unsigned long lock_flags = 0; 4885 4886 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata; 4887 4888 spin_lock_irqsave(host->host_lock, lock_flags); 4889 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type); 4890 spin_unlock_irqrestore(host->host_lock, lock_flags); 4891 4892 return buffer; 4893 } 4894 4895 static struct scsi_host_template driver_template = { 4896 .module = THIS_MODULE, 4897 .name = "IPR", 4898 .info = ipr_ioa_info, 4899 .ioctl = ipr_ioctl, 4900 .queuecommand = ipr_queuecommand, 4901 .eh_abort_handler = ipr_eh_abort, 4902 .eh_device_reset_handler = ipr_eh_dev_reset, 4903 .eh_host_reset_handler = ipr_eh_host_reset, 4904 .slave_alloc = ipr_slave_alloc, 4905 .slave_configure = ipr_slave_configure, 4906 .slave_destroy = ipr_slave_destroy, 4907 .target_alloc = ipr_target_alloc, 4908 .target_destroy = ipr_target_destroy, 4909 .change_queue_depth = ipr_change_queue_depth, 4910 .change_queue_type = ipr_change_queue_type, 4911 .bios_param = ipr_biosparam, 4912 .can_queue = IPR_MAX_COMMANDS, 4913 .this_id = -1, 4914 .sg_tablesize = IPR_MAX_SGLIST, 4915 .max_sectors = IPR_IOA_MAX_SECTORS, 4916 .cmd_per_lun = IPR_MAX_CMD_PER_LUN, 4917 .use_clustering = ENABLE_CLUSTERING, 4918 .shost_attrs = ipr_ioa_attrs, 4919 .sdev_attrs = ipr_dev_attrs, 4920 .proc_name = IPR_NAME 4921 }; 4922 4923 /** 4924 * ipr_ata_phy_reset - libata phy_reset handler 4925 * @ap: ata port to reset 4926 * 4927 **/ 4928 static void ipr_ata_phy_reset(struct ata_port *ap) 4929 { 4930 unsigned long flags; 4931 struct ipr_sata_port *sata_port = ap->private_data; 4932 struct ipr_resource_entry *res = sata_port->res; 4933 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4934 int rc; 4935 4936 ENTER; 4937 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4938 while(ioa_cfg->in_reset_reload) { 4939 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4940 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4941 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4942 } 4943 4944 if (!ioa_cfg->allow_cmds) 4945 goto out_unlock; 4946 4947 rc = ipr_device_reset(ioa_cfg, res); 4948 4949 if (rc) { 4950 ap->ops->port_disable(ap); 4951 goto out_unlock; 4952 } 4953 4954 switch(res->cfgte.proto) { 4955 case IPR_PROTO_SATA: 4956 case IPR_PROTO_SAS_STP: 4957 ap->device[0].class = ATA_DEV_ATA; 4958 break; 4959 case IPR_PROTO_SATA_ATAPI: 4960 case IPR_PROTO_SAS_STP_ATAPI: 4961 ap->device[0].class = ATA_DEV_ATAPI; 4962 break; 4963 default: 4964 ap->device[0].class = ATA_DEV_UNKNOWN; 4965 ap->ops->port_disable(ap); 4966 break; 4967 }; 4968 4969 out_unlock: 4970 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4971 LEAVE; 4972 } 4973 4974 /** 4975 * ipr_ata_post_internal - Cleanup after an internal command 4976 * @qc: ATA queued command 4977 * 4978 * Return value: 4979 * none 4980 **/ 4981 static void ipr_ata_post_internal(struct ata_queued_cmd *qc) 4982 { 4983 struct ipr_sata_port *sata_port = qc->ap->private_data; 4984 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 4985 struct ipr_cmnd *ipr_cmd; 4986 unsigned long flags; 4987 4988 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4989 while(ioa_cfg->in_reset_reload) { 4990 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 4991 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 4992 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 4993 } 4994 4995 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { 4996 if (ipr_cmd->qc == qc) { 4997 ipr_device_reset(ioa_cfg, sata_port->res); 4998 break; 4999 } 5000 } 5001 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 5002 } 5003 5004 /** 5005 * ipr_tf_read - Read the current ATA taskfile for the ATA port 5006 * @ap: ATA port 5007 * @tf: destination ATA taskfile 5008 * 5009 * Return value: 5010 * none 5011 **/ 5012 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 5013 { 5014 struct ipr_sata_port *sata_port = ap->private_data; 5015 struct ipr_ioasa_gata *g = &sata_port->ioasa; 5016 5017 tf->feature = g->error; 5018 tf->nsect = g->nsect; 5019 tf->lbal = g->lbal; 5020 tf->lbam = g->lbam; 5021 tf->lbah = g->lbah; 5022 tf->device = g->device; 5023 tf->command = g->status; 5024 tf->hob_nsect = g->hob_nsect; 5025 tf->hob_lbal = g->hob_lbal; 5026 tf->hob_lbam = g->hob_lbam; 5027 tf->hob_lbah = g->hob_lbah; 5028 tf->ctl = g->alt_status; 5029 } 5030 5031 /** 5032 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure 5033 * @regs: destination 5034 * @tf: source ATA taskfile 5035 * 5036 * Return value: 5037 * none 5038 **/ 5039 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, 5040 struct ata_taskfile *tf) 5041 { 5042 regs->feature = tf->feature; 5043 regs->nsect = tf->nsect; 5044 regs->lbal = tf->lbal; 5045 regs->lbam = tf->lbam; 5046 regs->lbah = tf->lbah; 5047 regs->device = tf->device; 5048 regs->command = tf->command; 5049 regs->hob_feature = tf->hob_feature; 5050 regs->hob_nsect = tf->hob_nsect; 5051 regs->hob_lbal = tf->hob_lbal; 5052 regs->hob_lbam = tf->hob_lbam; 5053 regs->hob_lbah = tf->hob_lbah; 5054 regs->ctl = tf->ctl; 5055 } 5056 5057 /** 5058 * ipr_sata_done - done function for SATA commands 5059 * @ipr_cmd: ipr command struct 5060 * 5061 * This function is invoked by the interrupt handler for 5062 * ops generated by the SCSI mid-layer to SATA devices 5063 * 5064 * Return value: 5065 * none 5066 **/ 5067 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) 5068 { 5069 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5070 struct ata_queued_cmd *qc = ipr_cmd->qc; 5071 struct ipr_sata_port *sata_port = qc->ap->private_data; 5072 struct ipr_resource_entry *res = sata_port->res; 5073 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5074 5075 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata, 5076 sizeof(struct ipr_ioasa_gata)); 5077 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); 5078 5079 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) 5080 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus, 5081 res->cfgte.res_addr.target); 5082 5083 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) 5084 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5085 else 5086 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status); 5087 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5088 ata_qc_complete(qc); 5089 } 5090 5091 /** 5092 * ipr_build_ata_ioadl - Build an ATA scatter/gather list 5093 * @ipr_cmd: ipr command struct 5094 * @qc: ATA queued command 5095 * 5096 **/ 5097 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, 5098 struct ata_queued_cmd *qc) 5099 { 5100 u32 ioadl_flags = 0; 5101 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5102 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5103 int len = qc->nbytes + qc->pad_len; 5104 struct scatterlist *sg; 5105 5106 if (len == 0) 5107 return; 5108 5109 if (qc->dma_dir == DMA_TO_DEVICE) { 5110 ioadl_flags = IPR_IOADL_FLAGS_WRITE; 5111 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5112 ioarcb->write_data_transfer_length = cpu_to_be32(len); 5113 ioarcb->write_ioadl_len = 5114 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5115 } else if (qc->dma_dir == DMA_FROM_DEVICE) { 5116 ioadl_flags = IPR_IOADL_FLAGS_READ; 5117 ioarcb->read_data_transfer_length = cpu_to_be32(len); 5118 ioarcb->read_ioadl_len = 5119 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); 5120 } 5121 5122 ata_for_each_sg(sg, qc) { 5123 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); 5124 ioadl->address = cpu_to_be32(sg_dma_address(sg)); 5125 if (ata_sg_is_last(sg, qc)) 5126 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); 5127 else 5128 ioadl++; 5129 } 5130 } 5131 5132 /** 5133 * ipr_qc_issue - Issue a SATA qc to a device 5134 * @qc: queued command 5135 * 5136 * Return value: 5137 * 0 if success 5138 **/ 5139 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) 5140 { 5141 struct ata_port *ap = qc->ap; 5142 struct ipr_sata_port *sata_port = ap->private_data; 5143 struct ipr_resource_entry *res = sata_port->res; 5144 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; 5145 struct ipr_cmnd *ipr_cmd; 5146 struct ipr_ioarcb *ioarcb; 5147 struct ipr_ioarcb_ata_regs *regs; 5148 5149 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) 5150 return AC_ERR_SYSTEM; 5151 5152 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 5153 ioarcb = &ipr_cmd->ioarcb; 5154 regs = &ioarcb->add_data.u.regs; 5155 5156 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data)); 5157 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs)); 5158 5159 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 5160 ipr_cmd->qc = qc; 5161 ipr_cmd->done = ipr_sata_done; 5162 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; 5163 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; 5164 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; 5165 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; 5166 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; 5167 5168 ipr_build_ata_ioadl(ipr_cmd, qc); 5169 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; 5170 ipr_copy_sata_tf(regs, &qc->tf); 5171 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); 5172 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); 5173 5174 switch (qc->tf.protocol) { 5175 case ATA_PROT_NODATA: 5176 case ATA_PROT_PIO: 5177 break; 5178 5179 case ATA_PROT_DMA: 5180 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5181 break; 5182 5183 case ATA_PROT_ATAPI: 5184 case ATA_PROT_ATAPI_NODATA: 5185 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5186 break; 5187 5188 case ATA_PROT_ATAPI_DMA: 5189 regs->flags |= IPR_ATA_FLAG_PACKET_CMD; 5190 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; 5191 break; 5192 5193 default: 5194 WARN_ON(1); 5195 return AC_ERR_INVALID; 5196 } 5197 5198 mb(); 5199 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr), 5200 ioa_cfg->regs.ioarrin_reg); 5201 return 0; 5202 } 5203 5204 /** 5205 * ipr_ata_check_status - Return last ATA status 5206 * @ap: ATA port 5207 * 5208 * Return value: 5209 * ATA status 5210 **/ 5211 static u8 ipr_ata_check_status(struct ata_port *ap) 5212 { 5213 struct ipr_sata_port *sata_port = ap->private_data; 5214 return sata_port->ioasa.status; 5215 } 5216 5217 /** 5218 * ipr_ata_check_altstatus - Return last ATA altstatus 5219 * @ap: ATA port 5220 * 5221 * Return value: 5222 * Alt ATA status 5223 **/ 5224 static u8 ipr_ata_check_altstatus(struct ata_port *ap) 5225 { 5226 struct ipr_sata_port *sata_port = ap->private_data; 5227 return sata_port->ioasa.alt_status; 5228 } 5229 5230 static struct ata_port_operations ipr_sata_ops = { 5231 .port_disable = ata_port_disable, 5232 .check_status = ipr_ata_check_status, 5233 .check_altstatus = ipr_ata_check_altstatus, 5234 .dev_select = ata_noop_dev_select, 5235 .phy_reset = ipr_ata_phy_reset, 5236 .post_internal_cmd = ipr_ata_post_internal, 5237 .tf_read = ipr_tf_read, 5238 .qc_prep = ata_noop_qc_prep, 5239 .qc_issue = ipr_qc_issue, 5240 .port_start = ata_sas_port_start, 5241 .port_stop = ata_sas_port_stop 5242 }; 5243 5244 static struct ata_port_info sata_port_info = { 5245 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | 5246 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, 5247 .pio_mask = 0x10, /* pio4 */ 5248 .mwdma_mask = 0x07, 5249 .udma_mask = 0x7f, /* udma0-6 */ 5250 .port_ops = &ipr_sata_ops 5251 }; 5252 5253 #ifdef CONFIG_PPC_PSERIES 5254 static const u16 ipr_blocked_processors[] = { 5255 PV_NORTHSTAR, 5256 PV_PULSAR, 5257 PV_POWER4, 5258 PV_ICESTAR, 5259 PV_SSTAR, 5260 PV_POWER4p, 5261 PV_630, 5262 PV_630p 5263 }; 5264 5265 /** 5266 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware 5267 * @ioa_cfg: ioa cfg struct 5268 * 5269 * Adapters that use Gemstone revision < 3.1 do not work reliably on 5270 * certain pSeries hardware. This function determines if the given 5271 * adapter is in one of these confgurations or not. 5272 * 5273 * Return value: 5274 * 1 if adapter is not supported / 0 if adapter is supported 5275 **/ 5276 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg) 5277 { 5278 u8 rev_id; 5279 int i; 5280 5281 if (ioa_cfg->type == 0x5702) { 5282 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID, 5283 &rev_id) == PCIBIOS_SUCCESSFUL) { 5284 if (rev_id < 4) { 5285 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){ 5286 if (__is_processor(ipr_blocked_processors[i])) 5287 return 1; 5288 } 5289 } 5290 } 5291 } 5292 return 0; 5293 } 5294 #else 5295 #define ipr_invalid_adapter(ioa_cfg) 0 5296 #endif 5297 5298 /** 5299 * ipr_ioa_bringdown_done - IOA bring down completion. 5300 * @ipr_cmd: ipr command struct 5301 * 5302 * This function processes the completion of an adapter bring down. 5303 * It wakes any reset sleepers. 5304 * 5305 * Return value: 5306 * IPR_RC_JOB_RETURN 5307 **/ 5308 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd) 5309 { 5310 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5311 5312 ENTER; 5313 ioa_cfg->in_reset_reload = 0; 5314 ioa_cfg->reset_retries = 0; 5315 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5316 wake_up_all(&ioa_cfg->reset_wait_q); 5317 5318 spin_unlock_irq(ioa_cfg->host->host_lock); 5319 scsi_unblock_requests(ioa_cfg->host); 5320 spin_lock_irq(ioa_cfg->host->host_lock); 5321 LEAVE; 5322 5323 return IPR_RC_JOB_RETURN; 5324 } 5325 5326 /** 5327 * ipr_ioa_reset_done - IOA reset completion. 5328 * @ipr_cmd: ipr command struct 5329 * 5330 * This function processes the completion of an adapter reset. 5331 * It schedules any necessary mid-layer add/removes and 5332 * wakes any reset sleepers. 5333 * 5334 * Return value: 5335 * IPR_RC_JOB_RETURN 5336 **/ 5337 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd) 5338 { 5339 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5340 struct ipr_resource_entry *res; 5341 struct ipr_hostrcb *hostrcb, *temp; 5342 int i = 0; 5343 5344 ENTER; 5345 ioa_cfg->in_reset_reload = 0; 5346 ioa_cfg->allow_cmds = 1; 5347 ioa_cfg->reset_cmd = NULL; 5348 ioa_cfg->doorbell |= IPR_RUNTIME_RESET; 5349 5350 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { 5351 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) { 5352 ipr_trace; 5353 break; 5354 } 5355 } 5356 schedule_work(&ioa_cfg->work_q); 5357 5358 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) { 5359 list_del(&hostrcb->queue); 5360 if (i++ < IPR_NUM_LOG_HCAMS) 5361 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb); 5362 else 5363 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb); 5364 } 5365 5366 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n"); 5367 5368 ioa_cfg->reset_retries = 0; 5369 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5370 wake_up_all(&ioa_cfg->reset_wait_q); 5371 5372 spin_unlock_irq(ioa_cfg->host->host_lock); 5373 scsi_unblock_requests(ioa_cfg->host); 5374 spin_lock_irq(ioa_cfg->host->host_lock); 5375 5376 if (!ioa_cfg->allow_cmds) 5377 scsi_block_requests(ioa_cfg->host); 5378 5379 LEAVE; 5380 return IPR_RC_JOB_RETURN; 5381 } 5382 5383 /** 5384 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer 5385 * @supported_dev: supported device struct 5386 * @vpids: vendor product id struct 5387 * 5388 * Return value: 5389 * none 5390 **/ 5391 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev, 5392 struct ipr_std_inq_vpids *vpids) 5393 { 5394 memset(supported_dev, 0, sizeof(struct ipr_supported_device)); 5395 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids)); 5396 supported_dev->num_records = 1; 5397 supported_dev->data_length = 5398 cpu_to_be16(sizeof(struct ipr_supported_device)); 5399 supported_dev->reserved = 0; 5400 } 5401 5402 /** 5403 * ipr_set_supported_devs - Send Set Supported Devices for a device 5404 * @ipr_cmd: ipr command struct 5405 * 5406 * This function send a Set Supported Devices to the adapter 5407 * 5408 * Return value: 5409 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5410 **/ 5411 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd) 5412 { 5413 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5414 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev; 5415 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5416 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5417 struct ipr_resource_entry *res = ipr_cmd->u.res; 5418 5419 ipr_cmd->job_step = ipr_ioa_reset_done; 5420 5421 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) { 5422 if (!ipr_is_scsi_disk(res)) 5423 continue; 5424 5425 ipr_cmd->u.res = res; 5426 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids); 5427 5428 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5429 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5430 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5431 5432 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES; 5433 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff; 5434 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff; 5435 5436 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | 5437 sizeof(struct ipr_supported_device)); 5438 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma + 5439 offsetof(struct ipr_misc_cbs, supp_dev)); 5440 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5441 ioarcb->write_data_transfer_length = 5442 cpu_to_be32(sizeof(struct ipr_supported_device)); 5443 5444 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 5445 IPR_SET_SUP_DEVICE_TIMEOUT); 5446 5447 ipr_cmd->job_step = ipr_set_supported_devs; 5448 return IPR_RC_JOB_RETURN; 5449 } 5450 5451 return IPR_RC_JOB_CONTINUE; 5452 } 5453 5454 /** 5455 * ipr_setup_write_cache - Disable write cache if needed 5456 * @ipr_cmd: ipr command struct 5457 * 5458 * This function sets up adapters write cache to desired setting 5459 * 5460 * Return value: 5461 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5462 **/ 5463 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd) 5464 { 5465 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5466 5467 ipr_cmd->job_step = ipr_set_supported_devs; 5468 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next, 5469 struct ipr_resource_entry, queue); 5470 5471 if (ioa_cfg->cache_state != CACHE_DISABLED) 5472 return IPR_RC_JOB_CONTINUE; 5473 5474 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5475 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5476 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 5477 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL; 5478 5479 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5480 5481 return IPR_RC_JOB_RETURN; 5482 } 5483 5484 /** 5485 * ipr_get_mode_page - Locate specified mode page 5486 * @mode_pages: mode page buffer 5487 * @page_code: page code to find 5488 * @len: minimum required length for mode page 5489 * 5490 * Return value: 5491 * pointer to mode page / NULL on failure 5492 **/ 5493 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages, 5494 u32 page_code, u32 len) 5495 { 5496 struct ipr_mode_page_hdr *mode_hdr; 5497 u32 page_length; 5498 u32 length; 5499 5500 if (!mode_pages || (mode_pages->hdr.length == 0)) 5501 return NULL; 5502 5503 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len; 5504 mode_hdr = (struct ipr_mode_page_hdr *) 5505 (mode_pages->data + mode_pages->hdr.block_desc_len); 5506 5507 while (length) { 5508 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) { 5509 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr))) 5510 return mode_hdr; 5511 break; 5512 } else { 5513 page_length = (sizeof(struct ipr_mode_page_hdr) + 5514 mode_hdr->page_length); 5515 length -= page_length; 5516 mode_hdr = (struct ipr_mode_page_hdr *) 5517 ((unsigned long)mode_hdr + page_length); 5518 } 5519 } 5520 return NULL; 5521 } 5522 5523 /** 5524 * ipr_check_term_power - Check for term power errors 5525 * @ioa_cfg: ioa config struct 5526 * @mode_pages: IOAFP mode pages buffer 5527 * 5528 * Check the IOAFP's mode page 28 for term power errors 5529 * 5530 * Return value: 5531 * nothing 5532 **/ 5533 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg, 5534 struct ipr_mode_pages *mode_pages) 5535 { 5536 int i; 5537 int entry_length; 5538 struct ipr_dev_bus_entry *bus; 5539 struct ipr_mode_page28 *mode_page; 5540 5541 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5542 sizeof(struct ipr_mode_page28)); 5543 5544 entry_length = mode_page->entry_length; 5545 5546 bus = mode_page->bus; 5547 5548 for (i = 0; i < mode_page->num_entries; i++) { 5549 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) { 5550 dev_err(&ioa_cfg->pdev->dev, 5551 "Term power is absent on scsi bus %d\n", 5552 bus->res_addr.bus); 5553 } 5554 5555 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length); 5556 } 5557 } 5558 5559 /** 5560 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table 5561 * @ioa_cfg: ioa config struct 5562 * 5563 * Looks through the config table checking for SES devices. If 5564 * the SES device is in the SES table indicating a maximum SCSI 5565 * bus speed, the speed is limited for the bus. 5566 * 5567 * Return value: 5568 * none 5569 **/ 5570 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg) 5571 { 5572 u32 max_xfer_rate; 5573 int i; 5574 5575 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 5576 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i, 5577 ioa_cfg->bus_attr[i].bus_width); 5578 5579 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate) 5580 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate; 5581 } 5582 } 5583 5584 /** 5585 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28 5586 * @ioa_cfg: ioa config struct 5587 * @mode_pages: mode page 28 buffer 5588 * 5589 * Updates mode page 28 based on driver configuration 5590 * 5591 * Return value: 5592 * none 5593 **/ 5594 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg, 5595 struct ipr_mode_pages *mode_pages) 5596 { 5597 int i, entry_length; 5598 struct ipr_dev_bus_entry *bus; 5599 struct ipr_bus_attributes *bus_attr; 5600 struct ipr_mode_page28 *mode_page; 5601 5602 mode_page = ipr_get_mode_page(mode_pages, 0x28, 5603 sizeof(struct ipr_mode_page28)); 5604 5605 entry_length = mode_page->entry_length; 5606 5607 /* Loop for each device bus entry */ 5608 for (i = 0, bus = mode_page->bus; 5609 i < mode_page->num_entries; 5610 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) { 5611 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) { 5612 dev_err(&ioa_cfg->pdev->dev, 5613 "Invalid resource address reported: 0x%08X\n", 5614 IPR_GET_PHYS_LOC(bus->res_addr)); 5615 continue; 5616 } 5617 5618 bus_attr = &ioa_cfg->bus_attr[i]; 5619 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY; 5620 bus->bus_width = bus_attr->bus_width; 5621 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate); 5622 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK; 5623 if (bus_attr->qas_enabled) 5624 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS; 5625 else 5626 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS; 5627 } 5628 } 5629 5630 /** 5631 * ipr_build_mode_select - Build a mode select command 5632 * @ipr_cmd: ipr command struct 5633 * @res_handle: resource handle to send command to 5634 * @parm: Byte 2 of Mode Sense command 5635 * @dma_addr: DMA buffer address 5636 * @xfer_len: data transfer length 5637 * 5638 * Return value: 5639 * none 5640 **/ 5641 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd, 5642 __be32 res_handle, u8 parm, u32 dma_addr, 5643 u8 xfer_len) 5644 { 5645 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5646 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5647 5648 ioarcb->res_handle = res_handle; 5649 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5650 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; 5651 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT; 5652 ioarcb->cmd_pkt.cdb[1] = parm; 5653 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5654 5655 ioadl->flags_and_data_len = 5656 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len); 5657 ioadl->address = cpu_to_be32(dma_addr); 5658 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5659 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len); 5660 } 5661 5662 /** 5663 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA 5664 * @ipr_cmd: ipr command struct 5665 * 5666 * This function sets up the SCSI bus attributes and sends 5667 * a Mode Select for Page 28 to activate them. 5668 * 5669 * Return value: 5670 * IPR_RC_JOB_RETURN 5671 **/ 5672 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd) 5673 { 5674 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5675 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages; 5676 int length; 5677 5678 ENTER; 5679 ipr_scsi_bus_speed_limit(ioa_cfg); 5680 ipr_check_term_power(ioa_cfg, mode_pages); 5681 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages); 5682 length = mode_pages->hdr.length + 1; 5683 mode_pages->hdr.length = 0; 5684 5685 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11, 5686 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages), 5687 length); 5688 5689 ipr_cmd->job_step = ipr_setup_write_cache; 5690 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5691 5692 LEAVE; 5693 return IPR_RC_JOB_RETURN; 5694 } 5695 5696 /** 5697 * ipr_build_mode_sense - Builds a mode sense command 5698 * @ipr_cmd: ipr command struct 5699 * @res: resource entry struct 5700 * @parm: Byte 2 of mode sense command 5701 * @dma_addr: DMA address of mode sense buffer 5702 * @xfer_len: Size of DMA buffer 5703 * 5704 * Return value: 5705 * none 5706 **/ 5707 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd, 5708 __be32 res_handle, 5709 u8 parm, u32 dma_addr, u8 xfer_len) 5710 { 5711 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5712 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5713 5714 ioarcb->res_handle = res_handle; 5715 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE; 5716 ioarcb->cmd_pkt.cdb[2] = parm; 5717 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5718 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5719 5720 ioadl->flags_and_data_len = 5721 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5722 ioadl->address = cpu_to_be32(dma_addr); 5723 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5724 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5725 } 5726 5727 /** 5728 * ipr_reset_cmd_failed - Handle failure of IOA reset command 5729 * @ipr_cmd: ipr command struct 5730 * 5731 * This function handles the failure of an IOA bringup command. 5732 * 5733 * Return value: 5734 * IPR_RC_JOB_RETURN 5735 **/ 5736 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd) 5737 { 5738 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5739 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5740 5741 dev_err(&ioa_cfg->pdev->dev, 5742 "0x%02X failed with IOASC: 0x%08X\n", 5743 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc); 5744 5745 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 5746 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 5747 return IPR_RC_JOB_RETURN; 5748 } 5749 5750 /** 5751 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense 5752 * @ipr_cmd: ipr command struct 5753 * 5754 * This function handles the failure of a Mode Sense to the IOAFP. 5755 * Some adapters do not handle all mode pages. 5756 * 5757 * Return value: 5758 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5759 **/ 5760 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd) 5761 { 5762 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 5763 5764 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) { 5765 ipr_cmd->job_step = ipr_setup_write_cache; 5766 return IPR_RC_JOB_CONTINUE; 5767 } 5768 5769 return ipr_reset_cmd_failed(ipr_cmd); 5770 } 5771 5772 /** 5773 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA 5774 * @ipr_cmd: ipr command struct 5775 * 5776 * This function send a Page 28 mode sense to the IOA to 5777 * retrieve SCSI bus attributes. 5778 * 5779 * Return value: 5780 * IPR_RC_JOB_RETURN 5781 **/ 5782 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd) 5783 { 5784 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5785 5786 ENTER; 5787 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 5788 0x28, ioa_cfg->vpd_cbs_dma + 5789 offsetof(struct ipr_misc_cbs, mode_pages), 5790 sizeof(struct ipr_mode_pages)); 5791 5792 ipr_cmd->job_step = ipr_ioafp_mode_select_page28; 5793 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed; 5794 5795 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5796 5797 LEAVE; 5798 return IPR_RC_JOB_RETURN; 5799 } 5800 5801 /** 5802 * ipr_init_res_table - Initialize the resource table 5803 * @ipr_cmd: ipr command struct 5804 * 5805 * This function looks through the existing resource table, comparing 5806 * it with the config table. This function will take care of old/new 5807 * devices and schedule adding/removing them from the mid-layer 5808 * as appropriate. 5809 * 5810 * Return value: 5811 * IPR_RC_JOB_CONTINUE 5812 **/ 5813 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) 5814 { 5815 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5816 struct ipr_resource_entry *res, *temp; 5817 struct ipr_config_table_entry *cfgte; 5818 int found, i; 5819 LIST_HEAD(old_res); 5820 5821 ENTER; 5822 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ) 5823 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n"); 5824 5825 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue) 5826 list_move_tail(&res->queue, &old_res); 5827 5828 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) { 5829 cfgte = &ioa_cfg->cfg_table->dev[i]; 5830 found = 0; 5831 5832 list_for_each_entry_safe(res, temp, &old_res, queue) { 5833 if (!memcmp(&res->cfgte.res_addr, 5834 &cfgte->res_addr, sizeof(cfgte->res_addr))) { 5835 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5836 found = 1; 5837 break; 5838 } 5839 } 5840 5841 if (!found) { 5842 if (list_empty(&ioa_cfg->free_res_q)) { 5843 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n"); 5844 break; 5845 } 5846 5847 found = 1; 5848 res = list_entry(ioa_cfg->free_res_q.next, 5849 struct ipr_resource_entry, queue); 5850 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5851 ipr_init_res_entry(res); 5852 res->add_to_ml = 1; 5853 } 5854 5855 if (found) 5856 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry)); 5857 } 5858 5859 list_for_each_entry_safe(res, temp, &old_res, queue) { 5860 if (res->sdev) { 5861 res->del_from_ml = 1; 5862 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE; 5863 list_move_tail(&res->queue, &ioa_cfg->used_res_q); 5864 } else { 5865 list_move_tail(&res->queue, &ioa_cfg->free_res_q); 5866 } 5867 } 5868 5869 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28; 5870 5871 LEAVE; 5872 return IPR_RC_JOB_CONTINUE; 5873 } 5874 5875 /** 5876 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter. 5877 * @ipr_cmd: ipr command struct 5878 * 5879 * This function sends a Query IOA Configuration command 5880 * to the adapter to retrieve the IOA configuration table. 5881 * 5882 * Return value: 5883 * IPR_RC_JOB_RETURN 5884 **/ 5885 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) 5886 { 5887 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5888 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5889 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5890 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data; 5891 5892 ENTER; 5893 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n", 5894 ucode_vpd->major_release, ucode_vpd->card_type, 5895 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]); 5896 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 5897 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5898 5899 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG; 5900 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff; 5901 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff; 5902 5903 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5904 ioarcb->read_data_transfer_length = 5905 cpu_to_be32(sizeof(struct ipr_config_table)); 5906 5907 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma); 5908 ioadl->flags_and_data_len = 5909 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table)); 5910 5911 ipr_cmd->job_step = ipr_init_res_table; 5912 5913 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5914 5915 LEAVE; 5916 return IPR_RC_JOB_RETURN; 5917 } 5918 5919 /** 5920 * ipr_ioafp_inquiry - Send an Inquiry to the adapter. 5921 * @ipr_cmd: ipr command struct 5922 * 5923 * This utility function sends an inquiry to the adapter. 5924 * 5925 * Return value: 5926 * none 5927 **/ 5928 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page, 5929 u32 dma_addr, u8 xfer_len) 5930 { 5931 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 5932 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; 5933 5934 ENTER; 5935 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 5936 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 5937 5938 ioarcb->cmd_pkt.cdb[0] = INQUIRY; 5939 ioarcb->cmd_pkt.cdb[1] = flags; 5940 ioarcb->cmd_pkt.cdb[2] = page; 5941 ioarcb->cmd_pkt.cdb[4] = xfer_len; 5942 5943 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc)); 5944 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len); 5945 5946 ioadl->address = cpu_to_be32(dma_addr); 5947 ioadl->flags_and_data_len = 5948 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len); 5949 5950 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 5951 LEAVE; 5952 } 5953 5954 /** 5955 * ipr_inquiry_page_supported - Is the given inquiry page supported 5956 * @page0: inquiry page 0 buffer 5957 * @page: page code. 5958 * 5959 * This function determines if the specified inquiry page is supported. 5960 * 5961 * Return value: 5962 * 1 if page is supported / 0 if not 5963 **/ 5964 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page) 5965 { 5966 int i; 5967 5968 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++) 5969 if (page0->page[i] == page) 5970 return 1; 5971 5972 return 0; 5973 } 5974 5975 /** 5976 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter. 5977 * @ipr_cmd: ipr command struct 5978 * 5979 * This function sends a Page 3 inquiry to the adapter 5980 * to retrieve software VPD information. 5981 * 5982 * Return value: 5983 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 5984 **/ 5985 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd) 5986 { 5987 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 5988 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data; 5989 5990 ENTER; 5991 5992 if (!ipr_inquiry_page_supported(page0, 1)) 5993 ioa_cfg->cache_state = CACHE_NONE; 5994 5995 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; 5996 5997 ipr_ioafp_inquiry(ipr_cmd, 1, 3, 5998 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data), 5999 sizeof(struct ipr_inquiry_page3)); 6000 6001 LEAVE; 6002 return IPR_RC_JOB_RETURN; 6003 } 6004 6005 /** 6006 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter. 6007 * @ipr_cmd: ipr command struct 6008 * 6009 * This function sends a Page 0 inquiry to the adapter 6010 * to retrieve supported inquiry pages. 6011 * 6012 * Return value: 6013 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6014 **/ 6015 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd) 6016 { 6017 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6018 char type[5]; 6019 6020 ENTER; 6021 6022 /* Grab the type out of the VPD and store it away */ 6023 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4); 6024 type[4] = '\0'; 6025 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16); 6026 6027 ipr_cmd->job_step = ipr_ioafp_page3_inquiry; 6028 6029 ipr_ioafp_inquiry(ipr_cmd, 1, 0, 6030 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data), 6031 sizeof(struct ipr_inquiry_page0)); 6032 6033 LEAVE; 6034 return IPR_RC_JOB_RETURN; 6035 } 6036 6037 /** 6038 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter. 6039 * @ipr_cmd: ipr command struct 6040 * 6041 * This function sends a standard inquiry to the adapter. 6042 * 6043 * Return value: 6044 * IPR_RC_JOB_RETURN 6045 **/ 6046 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd) 6047 { 6048 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6049 6050 ENTER; 6051 ipr_cmd->job_step = ipr_ioafp_page0_inquiry; 6052 6053 ipr_ioafp_inquiry(ipr_cmd, 0, 0, 6054 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd), 6055 sizeof(struct ipr_ioa_vpd)); 6056 6057 LEAVE; 6058 return IPR_RC_JOB_RETURN; 6059 } 6060 6061 /** 6062 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ. 6063 * @ipr_cmd: ipr command struct 6064 * 6065 * This function send an Identify Host Request Response Queue 6066 * command to establish the HRRQ with the adapter. 6067 * 6068 * Return value: 6069 * IPR_RC_JOB_RETURN 6070 **/ 6071 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd) 6072 { 6073 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6074 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; 6075 6076 ENTER; 6077 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n"); 6078 6079 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q; 6080 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6081 6082 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6083 ioarcb->cmd_pkt.cdb[2] = 6084 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff; 6085 ioarcb->cmd_pkt.cdb[3] = 6086 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff; 6087 ioarcb->cmd_pkt.cdb[4] = 6088 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff; 6089 ioarcb->cmd_pkt.cdb[5] = 6090 ((u32) ioa_cfg->host_rrq_dma) & 0xff; 6091 ioarcb->cmd_pkt.cdb[7] = 6092 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff; 6093 ioarcb->cmd_pkt.cdb[8] = 6094 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff; 6095 6096 ipr_cmd->job_step = ipr_ioafp_std_inquiry; 6097 6098 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT); 6099 6100 LEAVE; 6101 return IPR_RC_JOB_RETURN; 6102 } 6103 6104 /** 6105 * ipr_reset_timer_done - Adapter reset timer function 6106 * @ipr_cmd: ipr command struct 6107 * 6108 * Description: This function is used in adapter reset processing 6109 * for timing events. If the reset_cmd pointer in the IOA 6110 * config struct is not this adapter's we are doing nested 6111 * resets and fail_all_ops will take care of freeing the 6112 * command block. 6113 * 6114 * Return value: 6115 * none 6116 **/ 6117 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd) 6118 { 6119 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6120 unsigned long lock_flags = 0; 6121 6122 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 6123 6124 if (ioa_cfg->reset_cmd == ipr_cmd) { 6125 list_del(&ipr_cmd->queue); 6126 ipr_cmd->done(ipr_cmd); 6127 } 6128 6129 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 6130 } 6131 6132 /** 6133 * ipr_reset_start_timer - Start a timer for adapter reset job 6134 * @ipr_cmd: ipr command struct 6135 * @timeout: timeout value 6136 * 6137 * Description: This function is used in adapter reset processing 6138 * for timing events. If the reset_cmd pointer in the IOA 6139 * config struct is not this adapter's we are doing nested 6140 * resets and fail_all_ops will take care of freeing the 6141 * command block. 6142 * 6143 * Return value: 6144 * none 6145 **/ 6146 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd, 6147 unsigned long timeout) 6148 { 6149 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6150 ipr_cmd->done = ipr_reset_ioa_job; 6151 6152 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6153 ipr_cmd->timer.expires = jiffies + timeout; 6154 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done; 6155 add_timer(&ipr_cmd->timer); 6156 } 6157 6158 /** 6159 * ipr_init_ioa_mem - Initialize ioa_cfg control block 6160 * @ioa_cfg: ioa cfg struct 6161 * 6162 * Return value: 6163 * nothing 6164 **/ 6165 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg) 6166 { 6167 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS); 6168 6169 /* Initialize Host RRQ pointers */ 6170 ioa_cfg->hrrq_start = ioa_cfg->host_rrq; 6171 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1]; 6172 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start; 6173 ioa_cfg->toggle_bit = 1; 6174 6175 /* Zero out config table */ 6176 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table)); 6177 } 6178 6179 /** 6180 * ipr_reset_enable_ioa - Enable the IOA following a reset. 6181 * @ipr_cmd: ipr command struct 6182 * 6183 * This function reinitializes some control blocks and 6184 * enables destructive diagnostics on the adapter. 6185 * 6186 * Return value: 6187 * IPR_RC_JOB_RETURN 6188 **/ 6189 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd) 6190 { 6191 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6192 volatile u32 int_reg; 6193 6194 ENTER; 6195 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq; 6196 ipr_init_ioa_mem(ioa_cfg); 6197 6198 ioa_cfg->allow_interrupts = 1; 6199 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6200 6201 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) { 6202 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED), 6203 ioa_cfg->regs.clr_interrupt_mask_reg); 6204 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6205 return IPR_RC_JOB_CONTINUE; 6206 } 6207 6208 /* Enable destructive diagnostics on IOA */ 6209 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg); 6210 6211 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg); 6212 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 6213 6214 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n"); 6215 6216 ipr_cmd->timer.data = (unsigned long) ipr_cmd; 6217 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ); 6218 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout; 6219 ipr_cmd->done = ipr_reset_ioa_job; 6220 add_timer(&ipr_cmd->timer); 6221 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); 6222 6223 LEAVE; 6224 return IPR_RC_JOB_RETURN; 6225 } 6226 6227 /** 6228 * ipr_reset_wait_for_dump - Wait for a dump to timeout. 6229 * @ipr_cmd: ipr command struct 6230 * 6231 * This function is invoked when an adapter dump has run out 6232 * of processing time. 6233 * 6234 * Return value: 6235 * IPR_RC_JOB_CONTINUE 6236 **/ 6237 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd) 6238 { 6239 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6240 6241 if (ioa_cfg->sdt_state == GET_DUMP) 6242 ioa_cfg->sdt_state = ABORT_DUMP; 6243 6244 ipr_cmd->job_step = ipr_reset_alert; 6245 6246 return IPR_RC_JOB_CONTINUE; 6247 } 6248 6249 /** 6250 * ipr_unit_check_no_data - Log a unit check/no data error log 6251 * @ioa_cfg: ioa config struct 6252 * 6253 * Logs an error indicating the adapter unit checked, but for some 6254 * reason, we were unable to fetch the unit check buffer. 6255 * 6256 * Return value: 6257 * nothing 6258 **/ 6259 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg) 6260 { 6261 ioa_cfg->errors_logged++; 6262 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n"); 6263 } 6264 6265 /** 6266 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA 6267 * @ioa_cfg: ioa config struct 6268 * 6269 * Fetches the unit check buffer from the adapter by clocking the data 6270 * through the mailbox register. 6271 * 6272 * Return value: 6273 * nothing 6274 **/ 6275 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg) 6276 { 6277 unsigned long mailbox; 6278 struct ipr_hostrcb *hostrcb; 6279 struct ipr_uc_sdt sdt; 6280 int rc, length; 6281 6282 mailbox = readl(ioa_cfg->ioa_mailbox); 6283 6284 if (!ipr_sdt_is_fmt2(mailbox)) { 6285 ipr_unit_check_no_data(ioa_cfg); 6286 return; 6287 } 6288 6289 memset(&sdt, 0, sizeof(struct ipr_uc_sdt)); 6290 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt, 6291 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32)); 6292 6293 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) || 6294 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) { 6295 ipr_unit_check_no_data(ioa_cfg); 6296 return; 6297 } 6298 6299 /* Find length of the first sdt entry (UC buffer) */ 6300 length = (be32_to_cpu(sdt.entry[0].end_offset) - 6301 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK; 6302 6303 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next, 6304 struct ipr_hostrcb, queue); 6305 list_del(&hostrcb->queue); 6306 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam)); 6307 6308 rc = ipr_get_ldump_data_section(ioa_cfg, 6309 be32_to_cpu(sdt.entry[0].bar_str_offset), 6310 (__be32 *)&hostrcb->hcam, 6311 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32)); 6312 6313 if (!rc) 6314 ipr_handle_log_data(ioa_cfg, hostrcb); 6315 else 6316 ipr_unit_check_no_data(ioa_cfg); 6317 6318 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q); 6319 } 6320 6321 /** 6322 * ipr_reset_restore_cfg_space - Restore PCI config space. 6323 * @ipr_cmd: ipr command struct 6324 * 6325 * Description: This function restores the saved PCI config space of 6326 * the adapter, fails all outstanding ops back to the callers, and 6327 * fetches the dump/unit check if applicable to this reset. 6328 * 6329 * Return value: 6330 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6331 **/ 6332 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd) 6333 { 6334 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6335 int rc; 6336 6337 ENTER; 6338 rc = pci_restore_state(ioa_cfg->pdev); 6339 6340 if (rc != PCIBIOS_SUCCESSFUL) { 6341 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6342 return IPR_RC_JOB_CONTINUE; 6343 } 6344 6345 if (ipr_set_pcix_cmd_reg(ioa_cfg)) { 6346 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6347 return IPR_RC_JOB_CONTINUE; 6348 } 6349 6350 ipr_fail_all_ops(ioa_cfg); 6351 6352 if (ioa_cfg->ioa_unit_checked) { 6353 ioa_cfg->ioa_unit_checked = 0; 6354 ipr_get_unit_check_buffer(ioa_cfg); 6355 ipr_cmd->job_step = ipr_reset_alert; 6356 ipr_reset_start_timer(ipr_cmd, 0); 6357 return IPR_RC_JOB_RETURN; 6358 } 6359 6360 if (ioa_cfg->in_ioa_bringdown) { 6361 ipr_cmd->job_step = ipr_ioa_bringdown_done; 6362 } else { 6363 ipr_cmd->job_step = ipr_reset_enable_ioa; 6364 6365 if (GET_DUMP == ioa_cfg->sdt_state) { 6366 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT); 6367 ipr_cmd->job_step = ipr_reset_wait_for_dump; 6368 schedule_work(&ioa_cfg->work_q); 6369 return IPR_RC_JOB_RETURN; 6370 } 6371 } 6372 6373 ENTER; 6374 return IPR_RC_JOB_CONTINUE; 6375 } 6376 6377 /** 6378 * ipr_reset_bist_done - BIST has completed on the adapter. 6379 * @ipr_cmd: ipr command struct 6380 * 6381 * Description: Unblock config space and resume the reset process. 6382 * 6383 * Return value: 6384 * IPR_RC_JOB_CONTINUE 6385 **/ 6386 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd) 6387 { 6388 ENTER; 6389 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6390 ipr_cmd->job_step = ipr_reset_restore_cfg_space; 6391 LEAVE; 6392 return IPR_RC_JOB_CONTINUE; 6393 } 6394 6395 /** 6396 * ipr_reset_start_bist - Run BIST on the adapter. 6397 * @ipr_cmd: ipr command struct 6398 * 6399 * Description: This function runs BIST on the adapter, then delays 2 seconds. 6400 * 6401 * Return value: 6402 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6403 **/ 6404 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd) 6405 { 6406 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6407 int rc; 6408 6409 ENTER; 6410 pci_block_user_cfg_access(ioa_cfg->pdev); 6411 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START); 6412 6413 if (rc != PCIBIOS_SUCCESSFUL) { 6414 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev); 6415 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR); 6416 rc = IPR_RC_JOB_CONTINUE; 6417 } else { 6418 ipr_cmd->job_step = ipr_reset_bist_done; 6419 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT); 6420 rc = IPR_RC_JOB_RETURN; 6421 } 6422 6423 LEAVE; 6424 return rc; 6425 } 6426 6427 /** 6428 * ipr_reset_allowed - Query whether or not IOA can be reset 6429 * @ioa_cfg: ioa config struct 6430 * 6431 * Return value: 6432 * 0 if reset not allowed / non-zero if reset is allowed 6433 **/ 6434 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg) 6435 { 6436 volatile u32 temp_reg; 6437 6438 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg); 6439 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0); 6440 } 6441 6442 /** 6443 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA. 6444 * @ipr_cmd: ipr command struct 6445 * 6446 * Description: This function waits for adapter permission to run BIST, 6447 * then runs BIST. If the adapter does not give permission after a 6448 * reasonable time, we will reset the adapter anyway. The impact of 6449 * resetting the adapter without warning the adapter is the risk of 6450 * losing the persistent error log on the adapter. If the adapter is 6451 * reset while it is writing to the flash on the adapter, the flash 6452 * segment will have bad ECC and be zeroed. 6453 * 6454 * Return value: 6455 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6456 **/ 6457 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd) 6458 { 6459 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6460 int rc = IPR_RC_JOB_RETURN; 6461 6462 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) { 6463 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT; 6464 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6465 } else { 6466 ipr_cmd->job_step = ipr_reset_start_bist; 6467 rc = IPR_RC_JOB_CONTINUE; 6468 } 6469 6470 return rc; 6471 } 6472 6473 /** 6474 * ipr_reset_alert_part2 - Alert the adapter of a pending reset 6475 * @ipr_cmd: ipr command struct 6476 * 6477 * Description: This function alerts the adapter that it will be reset. 6478 * If memory space is not currently enabled, proceed directly 6479 * to running BIST on the adapter. The timer must always be started 6480 * so we guarantee we do not run BIST from ipr_isr. 6481 * 6482 * Return value: 6483 * IPR_RC_JOB_RETURN 6484 **/ 6485 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd) 6486 { 6487 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6488 u16 cmd_reg; 6489 int rc; 6490 6491 ENTER; 6492 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg); 6493 6494 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) { 6495 ipr_mask_and_clear_interrupts(ioa_cfg, ~0); 6496 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg); 6497 ipr_cmd->job_step = ipr_reset_wait_to_start_bist; 6498 } else { 6499 ipr_cmd->job_step = ipr_reset_start_bist; 6500 } 6501 6502 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT; 6503 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT); 6504 6505 LEAVE; 6506 return IPR_RC_JOB_RETURN; 6507 } 6508 6509 /** 6510 * ipr_reset_ucode_download_done - Microcode download completion 6511 * @ipr_cmd: ipr command struct 6512 * 6513 * Description: This function unmaps the microcode download buffer. 6514 * 6515 * Return value: 6516 * IPR_RC_JOB_CONTINUE 6517 **/ 6518 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd) 6519 { 6520 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6521 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6522 6523 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist, 6524 sglist->num_sg, DMA_TO_DEVICE); 6525 6526 ipr_cmd->job_step = ipr_reset_alert; 6527 return IPR_RC_JOB_CONTINUE; 6528 } 6529 6530 /** 6531 * ipr_reset_ucode_download - Download microcode to the adapter 6532 * @ipr_cmd: ipr command struct 6533 * 6534 * Description: This function checks to see if it there is microcode 6535 * to download to the adapter. If there is, a download is performed. 6536 * 6537 * Return value: 6538 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6539 **/ 6540 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd) 6541 { 6542 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6543 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist; 6544 6545 ENTER; 6546 ipr_cmd->job_step = ipr_reset_alert; 6547 6548 if (!sglist) 6549 return IPR_RC_JOB_CONTINUE; 6550 6551 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6552 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB; 6553 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER; 6554 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE; 6555 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16; 6556 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8; 6557 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff; 6558 6559 ipr_build_ucode_ioadl(ipr_cmd, sglist); 6560 ipr_cmd->job_step = ipr_reset_ucode_download_done; 6561 6562 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, 6563 IPR_WRITE_BUFFER_TIMEOUT); 6564 6565 LEAVE; 6566 return IPR_RC_JOB_RETURN; 6567 } 6568 6569 /** 6570 * ipr_reset_shutdown_ioa - Shutdown the adapter 6571 * @ipr_cmd: ipr command struct 6572 * 6573 * Description: This function issues an adapter shutdown of the 6574 * specified type to the specified adapter as part of the 6575 * adapter reset job. 6576 * 6577 * Return value: 6578 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN 6579 **/ 6580 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd) 6581 { 6582 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6583 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type; 6584 unsigned long timeout; 6585 int rc = IPR_RC_JOB_CONTINUE; 6586 6587 ENTER; 6588 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) { 6589 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE); 6590 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD; 6591 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN; 6592 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type; 6593 6594 if (shutdown_type == IPR_SHUTDOWN_ABBREV) 6595 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT; 6596 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL) 6597 timeout = IPR_INTERNAL_TIMEOUT; 6598 else 6599 timeout = IPR_SHUTDOWN_TIMEOUT; 6600 6601 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout); 6602 6603 rc = IPR_RC_JOB_RETURN; 6604 ipr_cmd->job_step = ipr_reset_ucode_download; 6605 } else 6606 ipr_cmd->job_step = ipr_reset_alert; 6607 6608 LEAVE; 6609 return rc; 6610 } 6611 6612 /** 6613 * ipr_reset_ioa_job - Adapter reset job 6614 * @ipr_cmd: ipr command struct 6615 * 6616 * Description: This function is the job router for the adapter reset job. 6617 * 6618 * Return value: 6619 * none 6620 **/ 6621 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd) 6622 { 6623 u32 rc, ioasc; 6624 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; 6625 6626 do { 6627 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); 6628 6629 if (ioa_cfg->reset_cmd != ipr_cmd) { 6630 /* 6631 * We are doing nested adapter resets and this is 6632 * not the current reset job. 6633 */ 6634 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 6635 return; 6636 } 6637 6638 if (IPR_IOASC_SENSE_KEY(ioasc)) { 6639 rc = ipr_cmd->job_step_failed(ipr_cmd); 6640 if (rc == IPR_RC_JOB_RETURN) 6641 return; 6642 } 6643 6644 ipr_reinit_ipr_cmnd(ipr_cmd); 6645 ipr_cmd->job_step_failed = ipr_reset_cmd_failed; 6646 rc = ipr_cmd->job_step(ipr_cmd); 6647 } while(rc == IPR_RC_JOB_CONTINUE); 6648 } 6649 6650 /** 6651 * _ipr_initiate_ioa_reset - Initiate an adapter reset 6652 * @ioa_cfg: ioa config struct 6653 * @job_step: first job step of reset job 6654 * @shutdown_type: shutdown type 6655 * 6656 * Description: This function will initiate the reset of the given adapter 6657 * starting at the selected job step. 6658 * If the caller needs to wait on the completion of the reset, 6659 * the caller must sleep on the reset_wait_q. 6660 * 6661 * Return value: 6662 * none 6663 **/ 6664 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6665 int (*job_step) (struct ipr_cmnd *), 6666 enum ipr_shutdown_type shutdown_type) 6667 { 6668 struct ipr_cmnd *ipr_cmd; 6669 6670 ioa_cfg->in_reset_reload = 1; 6671 ioa_cfg->allow_cmds = 0; 6672 scsi_block_requests(ioa_cfg->host); 6673 6674 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); 6675 ioa_cfg->reset_cmd = ipr_cmd; 6676 ipr_cmd->job_step = job_step; 6677 ipr_cmd->u.shutdown_type = shutdown_type; 6678 6679 ipr_reset_ioa_job(ipr_cmd); 6680 } 6681 6682 /** 6683 * ipr_initiate_ioa_reset - Initiate an adapter reset 6684 * @ioa_cfg: ioa config struct 6685 * @shutdown_type: shutdown type 6686 * 6687 * Description: This function will initiate the reset of the given adapter. 6688 * If the caller needs to wait on the completion of the reset, 6689 * the caller must sleep on the reset_wait_q. 6690 * 6691 * Return value: 6692 * none 6693 **/ 6694 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg, 6695 enum ipr_shutdown_type shutdown_type) 6696 { 6697 if (ioa_cfg->ioa_is_dead) 6698 return; 6699 6700 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP) 6701 ioa_cfg->sdt_state = ABORT_DUMP; 6702 6703 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) { 6704 dev_err(&ioa_cfg->pdev->dev, 6705 "IOA taken offline - error recovery failed\n"); 6706 6707 ioa_cfg->reset_retries = 0; 6708 ioa_cfg->ioa_is_dead = 1; 6709 6710 if (ioa_cfg->in_ioa_bringdown) { 6711 ioa_cfg->reset_cmd = NULL; 6712 ioa_cfg->in_reset_reload = 0; 6713 ipr_fail_all_ops(ioa_cfg); 6714 wake_up_all(&ioa_cfg->reset_wait_q); 6715 6716 spin_unlock_irq(ioa_cfg->host->host_lock); 6717 scsi_unblock_requests(ioa_cfg->host); 6718 spin_lock_irq(ioa_cfg->host->host_lock); 6719 return; 6720 } else { 6721 ioa_cfg->in_ioa_bringdown = 1; 6722 shutdown_type = IPR_SHUTDOWN_NONE; 6723 } 6724 } 6725 6726 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa, 6727 shutdown_type); 6728 } 6729 6730 /** 6731 * ipr_reset_freeze - Hold off all I/O activity 6732 * @ipr_cmd: ipr command struct 6733 * 6734 * Description: If the PCI slot is frozen, hold off all I/O 6735 * activity; then, as soon as the slot is available again, 6736 * initiate an adapter reset. 6737 */ 6738 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd) 6739 { 6740 /* Disallow new interrupts, avoid loop */ 6741 ipr_cmd->ioa_cfg->allow_interrupts = 0; 6742 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q); 6743 ipr_cmd->done = ipr_reset_ioa_job; 6744 return IPR_RC_JOB_RETURN; 6745 } 6746 6747 /** 6748 * ipr_pci_frozen - Called when slot has experienced a PCI bus error. 6749 * @pdev: PCI device struct 6750 * 6751 * Description: This routine is called to tell us that the PCI bus 6752 * is down. Can't do anything here, except put the device driver 6753 * into a holding pattern, waiting for the PCI bus to come back. 6754 */ 6755 static void ipr_pci_frozen(struct pci_dev *pdev) 6756 { 6757 unsigned long flags = 0; 6758 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6759 6760 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6761 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE); 6762 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6763 } 6764 6765 /** 6766 * ipr_pci_slot_reset - Called when PCI slot has been reset. 6767 * @pdev: PCI device struct 6768 * 6769 * Description: This routine is called by the pci error recovery 6770 * code after the PCI slot has been reset, just before we 6771 * should resume normal operations. 6772 */ 6773 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev) 6774 { 6775 unsigned long flags = 0; 6776 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6777 6778 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6779 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space, 6780 IPR_SHUTDOWN_NONE); 6781 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6782 return PCI_ERS_RESULT_RECOVERED; 6783 } 6784 6785 /** 6786 * ipr_pci_perm_failure - Called when PCI slot is dead for good. 6787 * @pdev: PCI device struct 6788 * 6789 * Description: This routine is called when the PCI bus has 6790 * permanently failed. 6791 */ 6792 static void ipr_pci_perm_failure(struct pci_dev *pdev) 6793 { 6794 unsigned long flags = 0; 6795 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 6796 6797 spin_lock_irqsave(ioa_cfg->host->host_lock, flags); 6798 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 6799 ioa_cfg->sdt_state = ABORT_DUMP; 6800 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES; 6801 ioa_cfg->in_ioa_bringdown = 1; 6802 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); 6804 } 6805 6806 /** 6807 * ipr_pci_error_detected - Called when a PCI error is detected. 6808 * @pdev: PCI device struct 6809 * @state: PCI channel state 6810 * 6811 * Description: Called when a PCI error is detected. 6812 * 6813 * Return value: 6814 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT 6815 */ 6816 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev, 6817 pci_channel_state_t state) 6818 { 6819 switch (state) { 6820 case pci_channel_io_frozen: 6821 ipr_pci_frozen(pdev); 6822 return PCI_ERS_RESULT_NEED_RESET; 6823 case pci_channel_io_perm_failure: 6824 ipr_pci_perm_failure(pdev); 6825 return PCI_ERS_RESULT_DISCONNECT; 6826 break; 6827 default: 6828 break; 6829 } 6830 return PCI_ERS_RESULT_NEED_RESET; 6831 } 6832 6833 /** 6834 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..) 6835 * @ioa_cfg: ioa cfg struct 6836 * 6837 * Description: This is the second phase of adapter intialization 6838 * This function takes care of initilizing the adapter to the point 6839 * where it can accept new commands. 6840 6841 * Return value: 6842 * 0 on sucess / -EIO on failure 6843 **/ 6844 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg) 6845 { 6846 int rc = 0; 6847 unsigned long host_lock_flags = 0; 6848 6849 ENTER; 6850 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6851 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg); 6852 if (ioa_cfg->needs_hard_reset) { 6853 ioa_cfg->needs_hard_reset = 0; 6854 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE); 6855 } else 6856 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, 6857 IPR_SHUTDOWN_NONE); 6858 6859 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6860 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 6861 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 6862 6863 if (ioa_cfg->ioa_is_dead) { 6864 rc = -EIO; 6865 } else if (ipr_invalid_adapter(ioa_cfg)) { 6866 if (!ipr_testmode) 6867 rc = -EIO; 6868 6869 dev_err(&ioa_cfg->pdev->dev, 6870 "Adapter not supported in this hardware configuration.\n"); 6871 } 6872 6873 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 6874 6875 LEAVE; 6876 return rc; 6877 } 6878 6879 /** 6880 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter 6881 * @ioa_cfg: ioa config struct 6882 * 6883 * Return value: 6884 * none 6885 **/ 6886 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6887 { 6888 int i; 6889 6890 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6891 if (ioa_cfg->ipr_cmnd_list[i]) 6892 pci_pool_free(ioa_cfg->ipr_cmd_pool, 6893 ioa_cfg->ipr_cmnd_list[i], 6894 ioa_cfg->ipr_cmnd_list_dma[i]); 6895 6896 ioa_cfg->ipr_cmnd_list[i] = NULL; 6897 } 6898 6899 if (ioa_cfg->ipr_cmd_pool) 6900 pci_pool_destroy (ioa_cfg->ipr_cmd_pool); 6901 6902 ioa_cfg->ipr_cmd_pool = NULL; 6903 } 6904 6905 /** 6906 * ipr_free_mem - Frees memory allocated for an adapter 6907 * @ioa_cfg: ioa cfg struct 6908 * 6909 * Return value: 6910 * nothing 6911 **/ 6912 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg) 6913 { 6914 int i; 6915 6916 kfree(ioa_cfg->res_entries); 6917 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs), 6918 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 6919 ipr_free_cmd_blks(ioa_cfg); 6920 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 6921 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 6922 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table), 6923 ioa_cfg->cfg_table, 6924 ioa_cfg->cfg_table_dma); 6925 6926 for (i = 0; i < IPR_NUM_HCAMS; i++) { 6927 pci_free_consistent(ioa_cfg->pdev, 6928 sizeof(struct ipr_hostrcb), 6929 ioa_cfg->hostrcb[i], 6930 ioa_cfg->hostrcb_dma[i]); 6931 } 6932 6933 ipr_free_dump(ioa_cfg); 6934 kfree(ioa_cfg->trace); 6935 } 6936 6937 /** 6938 * ipr_free_all_resources - Free all allocated resources for an adapter. 6939 * @ipr_cmd: ipr command struct 6940 * 6941 * This function frees all allocated resources for the 6942 * specified adapter. 6943 * 6944 * Return value: 6945 * none 6946 **/ 6947 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg) 6948 { 6949 struct pci_dev *pdev = ioa_cfg->pdev; 6950 6951 ENTER; 6952 free_irq(pdev->irq, ioa_cfg); 6953 iounmap(ioa_cfg->hdw_dma_regs); 6954 pci_release_regions(pdev); 6955 ipr_free_mem(ioa_cfg); 6956 scsi_host_put(ioa_cfg->host); 6957 pci_disable_device(pdev); 6958 LEAVE; 6959 } 6960 6961 /** 6962 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter 6963 * @ioa_cfg: ioa config struct 6964 * 6965 * Return value: 6966 * 0 on success / -ENOMEM on allocation failure 6967 **/ 6968 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg) 6969 { 6970 struct ipr_cmnd *ipr_cmd; 6971 struct ipr_ioarcb *ioarcb; 6972 dma_addr_t dma_addr; 6973 int i; 6974 6975 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev, 6976 sizeof(struct ipr_cmnd), 8, 0); 6977 6978 if (!ioa_cfg->ipr_cmd_pool) 6979 return -ENOMEM; 6980 6981 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) { 6982 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr); 6983 6984 if (!ipr_cmd) { 6985 ipr_free_cmd_blks(ioa_cfg); 6986 return -ENOMEM; 6987 } 6988 6989 memset(ipr_cmd, 0, sizeof(*ipr_cmd)); 6990 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd; 6991 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr; 6992 6993 ioarcb = &ipr_cmd->ioarcb; 6994 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr); 6995 ioarcb->host_response_handle = cpu_to_be32(i << 2); 6996 ioarcb->write_ioadl_addr = 6997 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl)); 6998 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr; 6999 ioarcb->ioasa_host_pci_addr = 7000 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa)); 7001 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa)); 7002 ipr_cmd->cmd_index = i; 7003 ipr_cmd->ioa_cfg = ioa_cfg; 7004 ipr_cmd->sense_buffer_dma = dma_addr + 7005 offsetof(struct ipr_cmnd, sense_buffer); 7006 7007 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); 7008 } 7009 7010 return 0; 7011 } 7012 7013 /** 7014 * ipr_alloc_mem - Allocate memory for an adapter 7015 * @ioa_cfg: ioa config struct 7016 * 7017 * Return value: 7018 * 0 on success / non-zero for error 7019 **/ 7020 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) 7021 { 7022 struct pci_dev *pdev = ioa_cfg->pdev; 7023 int i, rc = -ENOMEM; 7024 7025 ENTER; 7026 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * 7027 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL); 7028 7029 if (!ioa_cfg->res_entries) 7030 goto out; 7031 7032 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++) 7033 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q); 7034 7035 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev, 7036 sizeof(struct ipr_misc_cbs), 7037 &ioa_cfg->vpd_cbs_dma); 7038 7039 if (!ioa_cfg->vpd_cbs) 7040 goto out_free_res_entries; 7041 7042 if (ipr_alloc_cmd_blks(ioa_cfg)) 7043 goto out_free_vpd_cbs; 7044 7045 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev, 7046 sizeof(u32) * IPR_NUM_CMD_BLKS, 7047 &ioa_cfg->host_rrq_dma); 7048 7049 if (!ioa_cfg->host_rrq) 7050 goto out_ipr_free_cmd_blocks; 7051 7052 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev, 7053 sizeof(struct ipr_config_table), 7054 &ioa_cfg->cfg_table_dma); 7055 7056 if (!ioa_cfg->cfg_table) 7057 goto out_free_host_rrq; 7058 7059 for (i = 0; i < IPR_NUM_HCAMS; i++) { 7060 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev, 7061 sizeof(struct ipr_hostrcb), 7062 &ioa_cfg->hostrcb_dma[i]); 7063 7064 if (!ioa_cfg->hostrcb[i]) 7065 goto out_free_hostrcb_dma; 7066 7067 ioa_cfg->hostrcb[i]->hostrcb_dma = 7068 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam); 7069 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg; 7070 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); 7071 } 7072 7073 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * 7074 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); 7075 7076 if (!ioa_cfg->trace) 7077 goto out_free_hostrcb_dma; 7078 7079 rc = 0; 7080 out: 7081 LEAVE; 7082 return rc; 7083 7084 out_free_hostrcb_dma: 7085 while (i-- > 0) { 7086 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb), 7087 ioa_cfg->hostrcb[i], 7088 ioa_cfg->hostrcb_dma[i]); 7089 } 7090 pci_free_consistent(pdev, sizeof(struct ipr_config_table), 7091 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma); 7092 out_free_host_rrq: 7093 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS, 7094 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma); 7095 out_ipr_free_cmd_blocks: 7096 ipr_free_cmd_blks(ioa_cfg); 7097 out_free_vpd_cbs: 7098 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs), 7099 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma); 7100 out_free_res_entries: 7101 kfree(ioa_cfg->res_entries); 7102 goto out; 7103 } 7104 7105 /** 7106 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values 7107 * @ioa_cfg: ioa config struct 7108 * 7109 * Return value: 7110 * none 7111 **/ 7112 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg) 7113 { 7114 int i; 7115 7116 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) { 7117 ioa_cfg->bus_attr[i].bus = i; 7118 ioa_cfg->bus_attr[i].qas_enabled = 0; 7119 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH; 7120 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds)) 7121 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed]; 7122 else 7123 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE; 7124 } 7125 } 7126 7127 /** 7128 * ipr_init_ioa_cfg - Initialize IOA config struct 7129 * @ioa_cfg: ioa config struct 7130 * @host: scsi host struct 7131 * @pdev: PCI dev struct 7132 * 7133 * Return value: 7134 * none 7135 **/ 7136 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg, 7137 struct Scsi_Host *host, struct pci_dev *pdev) 7138 { 7139 const struct ipr_interrupt_offsets *p; 7140 struct ipr_interrupts *t; 7141 void __iomem *base; 7142 7143 ioa_cfg->host = host; 7144 ioa_cfg->pdev = pdev; 7145 ioa_cfg->log_level = ipr_log_level; 7146 ioa_cfg->doorbell = IPR_DOORBELL; 7147 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER); 7148 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL); 7149 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL); 7150 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL); 7151 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START); 7152 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL); 7153 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL); 7154 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL); 7155 7156 INIT_LIST_HEAD(&ioa_cfg->free_q); 7157 INIT_LIST_HEAD(&ioa_cfg->pending_q); 7158 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q); 7159 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q); 7160 INIT_LIST_HEAD(&ioa_cfg->free_res_q); 7161 INIT_LIST_HEAD(&ioa_cfg->used_res_q); 7162 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread); 7163 init_waitqueue_head(&ioa_cfg->reset_wait_q); 7164 ioa_cfg->sdt_state = INACTIVE; 7165 if (ipr_enable_cache) 7166 ioa_cfg->cache_state = CACHE_ENABLED; 7167 else 7168 ioa_cfg->cache_state = CACHE_DISABLED; 7169 7170 ipr_initialize_bus_attr(ioa_cfg); 7171 7172 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS; 7173 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET; 7174 host->max_channel = IPR_MAX_BUS_TO_SCAN; 7175 host->unique_id = host->host_no; 7176 host->max_cmd_len = IPR_MAX_CDB_LEN; 7177 pci_set_drvdata(pdev, ioa_cfg); 7178 7179 p = &ioa_cfg->chip_cfg->regs; 7180 t = &ioa_cfg->regs; 7181 base = ioa_cfg->hdw_dma_regs; 7182 7183 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg; 7184 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg; 7185 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg; 7186 t->clr_interrupt_reg = base + p->clr_interrupt_reg; 7187 t->sense_interrupt_reg = base + p->sense_interrupt_reg; 7188 t->ioarrin_reg = base + p->ioarrin_reg; 7189 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg; 7190 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg; 7191 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg; 7192 } 7193 7194 /** 7195 * ipr_get_chip_cfg - Find adapter chip configuration 7196 * @dev_id: PCI device id struct 7197 * 7198 * Return value: 7199 * ptr to chip config on success / NULL on failure 7200 **/ 7201 static const struct ipr_chip_cfg_t * __devinit 7202 ipr_get_chip_cfg(const struct pci_device_id *dev_id) 7203 { 7204 int i; 7205 7206 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++) 7207 if (ipr_chip[i].vendor == dev_id->vendor && 7208 ipr_chip[i].device == dev_id->device) 7209 return ipr_chip[i].cfg; 7210 return NULL; 7211 } 7212 7213 /** 7214 * ipr_probe_ioa - Allocates memory and does first stage of initialization 7215 * @pdev: PCI device struct 7216 * @dev_id: PCI device id struct 7217 * 7218 * Return value: 7219 * 0 on success / non-zero on failure 7220 **/ 7221 static int __devinit ipr_probe_ioa(struct pci_dev *pdev, 7222 const struct pci_device_id *dev_id) 7223 { 7224 struct ipr_ioa_cfg *ioa_cfg; 7225 struct Scsi_Host *host; 7226 unsigned long ipr_regs_pci; 7227 void __iomem *ipr_regs; 7228 int rc = PCIBIOS_SUCCESSFUL; 7229 volatile u32 mask, uproc; 7230 7231 ENTER; 7232 7233 if ((rc = pci_enable_device(pdev))) { 7234 dev_err(&pdev->dev, "Cannot enable adapter\n"); 7235 goto out; 7236 } 7237 7238 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq); 7239 7240 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg)); 7241 7242 if (!host) { 7243 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n"); 7244 rc = -ENOMEM; 7245 goto out_disable; 7246 } 7247 7248 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; 7249 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); 7250 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, 7251 sata_port_info.flags, &ipr_sata_ops); 7252 7253 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); 7254 7255 if (!ioa_cfg->chip_cfg) { 7256 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n", 7257 dev_id->vendor, dev_id->device); 7258 goto out_scsi_host_put; 7259 } 7260 7261 if (ipr_transop_timeout) 7262 ioa_cfg->transop_timeout = ipr_transop_timeout; 7263 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT) 7264 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT; 7265 else 7266 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT; 7267 7268 ipr_regs_pci = pci_resource_start(pdev, 0); 7269 7270 rc = pci_request_regions(pdev, IPR_NAME); 7271 if (rc < 0) { 7272 dev_err(&pdev->dev, 7273 "Couldn't register memory range of registers\n"); 7274 goto out_scsi_host_put; 7275 } 7276 7277 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0)); 7278 7279 if (!ipr_regs) { 7280 dev_err(&pdev->dev, 7281 "Couldn't map memory range of registers\n"); 7282 rc = -ENOMEM; 7283 goto out_release_regions; 7284 } 7285 7286 ioa_cfg->hdw_dma_regs = ipr_regs; 7287 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci; 7288 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs; 7289 7290 ipr_init_ioa_cfg(ioa_cfg, host, pdev); 7291 7292 pci_set_master(pdev); 7293 7294 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 7295 if (rc < 0) { 7296 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); 7297 goto cleanup_nomem; 7298 } 7299 7300 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 7301 ioa_cfg->chip_cfg->cache_line_size); 7302 7303 if (rc != PCIBIOS_SUCCESSFUL) { 7304 dev_err(&pdev->dev, "Write of cache line size failed\n"); 7305 rc = -EIO; 7306 goto cleanup_nomem; 7307 } 7308 7309 /* Save away PCI config space for use following IOA reset */ 7310 rc = pci_save_state(pdev); 7311 7312 if (rc != PCIBIOS_SUCCESSFUL) { 7313 dev_err(&pdev->dev, "Failed to save PCI config space\n"); 7314 rc = -EIO; 7315 goto cleanup_nomem; 7316 } 7317 7318 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) 7319 goto cleanup_nomem; 7320 7321 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) 7322 goto cleanup_nomem; 7323 7324 rc = ipr_alloc_mem(ioa_cfg); 7325 if (rc < 0) { 7326 dev_err(&pdev->dev, 7327 "Couldn't allocate enough memory for device driver!\n"); 7328 goto cleanup_nomem; 7329 } 7330 7331 /* 7332 * If HRRQ updated interrupt is not masked, or reset alert is set, 7333 * the card is in an unknown state and needs a hard reset 7334 */ 7335 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg); 7336 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg); 7337 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT)) 7338 ioa_cfg->needs_hard_reset = 1; 7339 7340 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER); 7341 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg); 7342 7343 if (rc) { 7344 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n", 7345 pdev->irq, rc); 7346 goto cleanup_nolog; 7347 } 7348 7349 spin_lock(&ipr_driver_lock); 7350 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head); 7351 spin_unlock(&ipr_driver_lock); 7352 7353 LEAVE; 7354 out: 7355 return rc; 7356 7357 cleanup_nolog: 7358 ipr_free_mem(ioa_cfg); 7359 cleanup_nomem: 7360 iounmap(ipr_regs); 7361 out_release_regions: 7362 pci_release_regions(pdev); 7363 out_scsi_host_put: 7364 scsi_host_put(host); 7365 out_disable: 7366 pci_disable_device(pdev); 7367 goto out; 7368 } 7369 7370 /** 7371 * ipr_scan_vsets - Scans for VSET devices 7372 * @ioa_cfg: ioa config struct 7373 * 7374 * Description: Since the VSET resources do not follow SAM in that we can have 7375 * sparse LUNs with no LUN 0, we have to scan for these ourselves. 7376 * 7377 * Return value: 7378 * none 7379 **/ 7380 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg) 7381 { 7382 int target, lun; 7383 7384 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++) 7385 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ ) 7386 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun); 7387 } 7388 7389 /** 7390 * ipr_initiate_ioa_bringdown - Bring down an adapter 7391 * @ioa_cfg: ioa config struct 7392 * @shutdown_type: shutdown type 7393 * 7394 * Description: This function will initiate bringing down the adapter. 7395 * This consists of issuing an IOA shutdown to the adapter 7396 * to flush the cache, and running BIST. 7397 * If the caller needs to wait on the completion of the reset, 7398 * the caller must sleep on the reset_wait_q. 7399 * 7400 * Return value: 7401 * none 7402 **/ 7403 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg, 7404 enum ipr_shutdown_type shutdown_type) 7405 { 7406 ENTER; 7407 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP) 7408 ioa_cfg->sdt_state = ABORT_DUMP; 7409 ioa_cfg->reset_retries = 0; 7410 ioa_cfg->in_ioa_bringdown = 1; 7411 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type); 7412 LEAVE; 7413 } 7414 7415 /** 7416 * __ipr_remove - Remove a single adapter 7417 * @pdev: pci device struct 7418 * 7419 * Adapter hot plug remove entry point. 7420 * 7421 * Return value: 7422 * none 7423 **/ 7424 static void __ipr_remove(struct pci_dev *pdev) 7425 { 7426 unsigned long host_lock_flags = 0; 7427 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7428 ENTER; 7429 7430 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7431 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7432 7433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7434 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7435 flush_scheduled_work(); 7436 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); 7437 7438 spin_lock(&ipr_driver_lock); 7439 list_del(&ioa_cfg->queue); 7440 spin_unlock(&ipr_driver_lock); 7441 7442 if (ioa_cfg->sdt_state == ABORT_DUMP) 7443 ioa_cfg->sdt_state = WAIT_FOR_DUMP; 7444 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); 7445 7446 ipr_free_all_resources(ioa_cfg); 7447 7448 LEAVE; 7449 } 7450 7451 /** 7452 * ipr_remove - IOA hot plug remove entry point 7453 * @pdev: pci device struct 7454 * 7455 * Adapter hot plug remove entry point. 7456 * 7457 * Return value: 7458 * none 7459 **/ 7460 static void ipr_remove(struct pci_dev *pdev) 7461 { 7462 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7463 7464 ENTER; 7465 7466 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7467 &ipr_trace_attr); 7468 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7469 &ipr_dump_attr); 7470 scsi_remove_host(ioa_cfg->host); 7471 7472 __ipr_remove(pdev); 7473 7474 LEAVE; 7475 } 7476 7477 /** 7478 * ipr_probe - Adapter hot plug add entry point 7479 * 7480 * Return value: 7481 * 0 on success / non-zero on failure 7482 **/ 7483 static int __devinit ipr_probe(struct pci_dev *pdev, 7484 const struct pci_device_id *dev_id) 7485 { 7486 struct ipr_ioa_cfg *ioa_cfg; 7487 int rc; 7488 7489 rc = ipr_probe_ioa(pdev, dev_id); 7490 7491 if (rc) 7492 return rc; 7493 7494 ioa_cfg = pci_get_drvdata(pdev); 7495 rc = ipr_probe_ioa_part2(ioa_cfg); 7496 7497 if (rc) { 7498 __ipr_remove(pdev); 7499 return rc; 7500 } 7501 7502 rc = scsi_add_host(ioa_cfg->host, &pdev->dev); 7503 7504 if (rc) { 7505 __ipr_remove(pdev); 7506 return rc; 7507 } 7508 7509 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7510 &ipr_trace_attr); 7511 7512 if (rc) { 7513 scsi_remove_host(ioa_cfg->host); 7514 __ipr_remove(pdev); 7515 return rc; 7516 } 7517 7518 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj, 7519 &ipr_dump_attr); 7520 7521 if (rc) { 7522 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj, 7523 &ipr_trace_attr); 7524 scsi_remove_host(ioa_cfg->host); 7525 __ipr_remove(pdev); 7526 return rc; 7527 } 7528 7529 scsi_scan_host(ioa_cfg->host); 7530 ipr_scan_vsets(ioa_cfg); 7531 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN); 7532 ioa_cfg->allow_ml_add_del = 1; 7533 ioa_cfg->host->max_channel = IPR_VSET_BUS; 7534 schedule_work(&ioa_cfg->work_q); 7535 return 0; 7536 } 7537 7538 /** 7539 * ipr_shutdown - Shutdown handler. 7540 * @pdev: pci device struct 7541 * 7542 * This function is invoked upon system shutdown/reboot. It will issue 7543 * an adapter shutdown to the adapter to flush the write cache. 7544 * 7545 * Return value: 7546 * none 7547 **/ 7548 static void ipr_shutdown(struct pci_dev *pdev) 7549 { 7550 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev); 7551 unsigned long lock_flags = 0; 7552 7553 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); 7554 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); 7555 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); 7556 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); 7557 } 7558 7559 static struct pci_device_id ipr_pci_table[] __devinitdata = { 7560 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 }, 7562 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7563 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 }, 7564 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7565 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 }, 7566 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, 7567 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 }, 7568 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7569 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 }, 7570 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7571 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 }, 7572 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7573 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 }, 7574 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, 7575 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 7576 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7577 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7578 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7579 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7580 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 }, 7581 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, 7582 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7583 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7584 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7585 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 }, 7586 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7587 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 }, 7588 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, 7589 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 7590 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7591 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7592 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 0 }, 7593 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7594 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 7595 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7596 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7597 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 }, 7598 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, 7599 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 7600 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7601 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, 7602 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 }, 7603 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7604 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 }, 7605 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7606 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 7607 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7608 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, 7609 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 7610 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7611 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E, 7612 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 7613 IPR_USE_LONG_TRANSOP_TIMEOUT }, 7614 { } 7615 }; 7616 MODULE_DEVICE_TABLE(pci, ipr_pci_table); 7617 7618 static struct pci_error_handlers ipr_err_handler = { 7619 .error_detected = ipr_pci_error_detected, 7620 .slot_reset = ipr_pci_slot_reset, 7621 }; 7622 7623 static struct pci_driver ipr_driver = { 7624 .name = IPR_NAME, 7625 .id_table = ipr_pci_table, 7626 .probe = ipr_probe, 7627 .remove = ipr_remove, 7628 .shutdown = ipr_shutdown, 7629 .err_handler = &ipr_err_handler, 7630 }; 7631 7632 /** 7633 * ipr_init - Module entry point 7634 * 7635 * Return value: 7636 * 0 on success / negative value on failure 7637 **/ 7638 static int __init ipr_init(void) 7639 { 7640 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", 7641 IPR_DRIVER_VERSION, IPR_DRIVER_DATE); 7642 7643 return pci_register_driver(&ipr_driver); 7644 } 7645 7646 /** 7647 * ipr_exit - Module unload 7648 * 7649 * Module unload entry point. 7650 * 7651 * Return value: 7652 * none 7653 **/ 7654 static void __exit ipr_exit(void) 7655 { 7656 pci_unregister_driver(&ipr_driver); 7657 } 7658 7659 module_init(ipr_init); 7660 module_exit(ipr_exit); 7661